Change the code in the Proposal Overview report (11000001) as follows:
Existing code 1...
                                                         SourceExpr=Name+' ('+"No."+')';
                                                         DataSetFieldName=Name_______No______ }
            { 47  ;TextBox      ;2400 ;423  ;6600 ;423  ;FontBold=Yes;
// Delete the following lines.
                                                         SourceExpr="Bank Account No.";
                                                         DataSetFieldName=Bank_Account__Bank_Account_No__ }
// End of the lines.
            { 48  ;Label        ;150  ;423  ;2100 ;423  ;ParentControl=47;
                                                         FontBold=Yes;
                                                         MultiLine=Yes;
...
 Replacement code 1...
                                                         SourceExpr=Name+' ('+"No."+')';
                                                         DataSetFieldName=Name_______No______ }
            { 47  ;TextBox      ;2400 ;423  ;6600 ;423  ;FontBold=Yes;
// Add the following lines.
                                                         SourceExpr="Bank Account".IBAN;
                                                         DataSetFieldName=Bank_Account__IBAN }
// End of the lines.
            { 48  ;Label        ;150  ;423  ;2100 ;423  ;ParentControl=47;
                                                         FontBold=Yes;
                                                         MultiLine=Yes;
...
 Existing code 2...
                                                         SourceExpr="Account No.";
                                                         DataSetFieldName=Proposal_Line__Account_No__ }
            { 3   ;TextBox      ;2250 ;1692 ;1800 ;423  ;HorzAlign=Left;
  // Delete the following lines.
                                                        SourceExpr="Bank Account No.";
                                                        DataSetFieldName=Proposal_Line__Bank_Account_No__ }
  // End of the lines.
            { 25  ;TextBox      ;2250 ;423  ;1800 ;423  ;HorzAlign=Left;
                                                         SourceExpr=FORMAT("Transaction Date");
                                                         DataSetFieldName=FORMAT__Transaction_Date__ }
...
 Existing code 3...
          <TableGroup>
            <Grouping Name="Table1_Group1">
              <GroupExpressions>
// Delete the following line.
                <GroupExpression>=Fields!Bank_Account__Bank_Account_No__.Value</GroupExpression>
              </GroupExpressions>
            </Grouping>
            <Header>
...
 Replacement code 3...
          <TableGroup>
            <Grouping Name="Table1_Group1">
              <GroupExpressions>
// Add the following line.
                <GroupExpression>=Fields!Bank_Account__IBAN.Value</GroupExpression>
              </GroupExpressions>
            </Grouping>
            <Header>
...
 Existing code 4...
                            <TextAlign>Left</TextAlign>
                            <VerticalAlign>Middle</VerticalAlign>
                          </Style>
// Delete the following line.
                          <Value>=Fields!Bank_Account__Bank_Account_No__.Value</Value>
                        </Textbox>
                      </ReportItems>
                    </TableCell>
...
 Replacement code 4...
                            <TextAlign>Left</TextAlign>
                            <VerticalAlign>Middle</VerticalAlign>
                          </Style>
// Add the following line.
                          <Value>=Fields!Bank_Account__IBAN.Value</Value>
                        </Textbox>
                      </ReportItems>
                    </TableCell>
...
 Existing code 5...
                            <TextAlign>Left</TextAlign>
                            <VerticalAlign>Middle</VerticalAlign>
                          </Style>
// Delete the following line.
                          <Value>=Fields!Proposal_Line__Bank_Account_No__.Value</Value>
                        </Textbox>
                      </ReportItems>
                    </TableCell>
...
 Replacement code 5...
                            <TextAlign>Left</TextAlign>
                            <VerticalAlign>Middle</VerticalAlign>
                          </Style>
// Delete the following line.
                          <Value>=Fields!Proposal_Line__IBAN.Value</Value>
                        </Textbox>
                      </ReportItems>
                    </TableCell>
...
 Existing code 6...
</Code>
  <DataSets>
<DataSet Name="DataSet_Result">
  // Delete the following lines.
     <Query>
       <CommandText />
       <DataSourceName>DummyDataSource</DataSourceName>
     </Query>
  // End of the lines.
      <Fields>
        <Field Name="Name_______No______">
          <DataField>Name_______No______</DataField>
...
 Replacement code 6...
</Code>
  <DataSets>
    <DataSet Name="DataSet_Result">
      <Fields>
        <Field Name="Name_______No______">
          <DataField>Name_______No______</DataField>
...
 Existing code 7...
        <Field Name="Name_______No______">
          <DataField>Name_______No______</DataField>
        </Field>
  // Delete the following lines.
       <Field Name="Bank_Account__Bank_Account_No__">
         <DataField>Bank_Account__Bank_Account_No__</DataField>
  // End of the lines.
        </Field>
        <Field Name="Bank_Account__Bank_Account_No__Caption">
          <DataField>Bank_Account__Bank_Account_No__Caption</DataField>
...
 Replacement code 7...
        <Field Name="Name_______No______">
          <DataField>Name_______No______</DataField>
        </Field>
  // Add the following lines.
       <Field Name="Bank_Account__IBAN">
         <DataField>Bank_Account__IBAN</DataField>
  // End of the lines.
        </Field>
        <Field Name="Bank_Account__Bank_Account_No__Caption">
          <DataField>Bank_Account__Bank_Account_No__Caption</DataField>
...
 Existing code 8...
        <Field Name="Proposal_Line__Account_No__">
          <DataField>Proposal_Line__Account_No__</DataField>
        </Field>
  // Delete the following lines.
       <Field Name="Proposal_Line__Bank_Account_No__">
         <DataField>Proposal_Line__Bank_Account_No__</DataField>
  // End of the lines.
        </Field>
        <Field Name="FORMAT__Transaction_Date__">
          <DataField>FORMAT__Transaction_Date__</DataField>
...
 Replacement code 8...
        <Field Name="Proposal_Line__Account_No__">
          <DataField>Proposal_Line__Account_No__</DataField>
        </Field>
  // Add the following lines.
       <Field Name="Proposal_Line__IBAN">
         <DataField>Proposal_Line__IBAN</DataField>
  // End of the lines.
        </Field>
        <Field Name="FORMAT__Transaction_Date__">
          <DataField>FORMAT__Transaction_Date__</DataField>
...
 Existing code 9...
          <DataField>Venhist2_Entry_No_</DataField>
        </Field>
      </Fields>
      <rd:DataSetInfo>
        <rd:DataSetName>DataSet</rd:DataSetName>
        <rd:TableName>Result</rd:TableName>
...
 Replacement code 9...
          <DataField>Venhist2_Entry_No_</DataField>
        </Field>
      </Fields>
  // Add the following lines.
     <Query>
       <CommandText />
       <DataSourceName>DummyDataSource</DataSourceName>
     </Query>
  // End of the lines.
      <rd:DataSetInfo>
        <rd:DataSetName>DataSet</rd:DataSetName>
        <rd:TableName>Result</rd:TableName>
...
 Existing code 10...
  <LeftMargin>1.5cm</LeftMargin>
  <PageHeight>29.7cm</PageHeight>
  <PageWidth>21cm</PageWidth>
// Delete the following line.
 <RightMargin>0cm</RightMargin>
  <TopMargin>2cm</TopMargin>
  <Width>17.75cm</Width>
  <rd:DrawGrid>true</rd:DrawGrid>
...
 Replacement code 10...
  <LeftMargin>1.5cm</LeftMargin>
  <PageHeight>29.7cm</PageHeight>
  <PageWidth>21cm</PageWidth>
  <TopMargin>2cm</TopMargin>
  <Width>17.75cm</Width>
  <rd:DrawGrid>true</rd:DrawGrid>
...
 Change the code in the Payment History Overview report (11000002) as follows:
Existing code 1...
                                                         CaptionML=ENU=Credit limit;
                                                         DataSetFieldName=Credit_limitCaption }
            { 92  ;TextBox      ;2400 ;423  ;6600 ;423  ;FontBold=Yes;
  // Delete the following lines.
                                                         SourceExpr="Bank Account No.";
                                                         DataSetFieldName=Bank_Account__Bank_Account_No__ }
  // End of the lines.
            { 93  ;TextBox      ;16050;423  ;1800 ;423  ;HorzAlign=Left;
                                                         SourceExpr="Payment History";
                                                         DataSetFieldName=Bank_Account__Payment_History_ }
...
 Replacement code 1...
                                                         CaptionML=ENU=Credit limit;
                                                         DataSetFieldName=Credit_limitCaption }
            { 92  ;TextBox      ;2400 ;423  ;6600 ;423  ;FontBold=Yes;
  // Add the following lines.
                                                         SourceExpr="Bank Account".IBAN;
                                                         DataSetFieldName=Bank_Account__IBAN }
  // End of the lines.
            { 93  ;TextBox      ;16050;423  ;1800 ;423  ;HorzAlign=Left;
                                                         SourceExpr="Payment History";
                                                         DataSetFieldName=Bank_Account__Payment_History_ }
...
 Existing code 2...
                                                         SourceExpr="Account No.";
                                                         DataSetFieldName=Payment_History_Line__Account_No__ }
            { 112 ;TextBox      ;2250 ;1692 ;1800 ;423  ;HorzAlign=Left;
  // Delete the following lines.
                                                         SourceExpr="Bank Account No.";
                                                         DataSetFieldName=Payment_History_Line__Bank_Account_No__ }
  // End of the lines.
            { 113 ;TextBox      ;2250 ;423  ;1800 ;423  ;HorzAlign=Left;
                                                         SourceExpr=FORMAT(Date);
                                                         DataSetFieldName=FORMAT_Date_ }
...
 Replacement code 2...
                                                         SourceExpr="Account No.";
                                                         DataSetFieldName=Payment_History_Line__Account_No__ }
            { 112 ;TextBox      ;2250 ;1692 ;1800 ;423  ;HorzAlign=Left;
  // Add the following lines.
                                                         SourceExpr="Bank Account".IBAN;
                                                         DataSetFieldName=Bank_Account__IBAN_ }
  // End of the lines.
            { 113 ;TextBox      ;2250 ;423  ;1800 ;423  ;HorzAlign=Left;
                                                         SourceExpr=FORMAT(Date);
                                                         DataSetFieldName=FORMAT_Date_ }
...
 Existing code 3...
    <?xml version="1.0" encoding="utf-8"?>
<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
  <Body>
// Delete the following line.
<Height>13.52495cm</Height>
    <ReportItems>
      <Table Name="Table1">
        <DataSetName>DataSet_Result</DataSetName>
...
 Replacement code 3...
    <?xml version="1.0" encoding="utf-8"?>
<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
  <Body>
// Add the following line.
    <Height>13.536cm</Height>
    <ReportItems>
      <Table Name="Table1">
        <DataSetName>DataSet_Result</DataSetName>
...
 Existing code 4...
                            <PaddingRight>2pt</PaddingRight>
                            <PaddingTop>2pt</PaddingTop>
                          </Style>
// Delete the following line.
                          <Value>=Fields!Bank_Account__Bank_Account_No__.Value</Value>
                        </Textbox>
                      </ReportItems>
                    </TableCell>
...
 Replacement code 4...
                            <PaddingRight>2pt</PaddingRight>
                            <PaddingTop>2pt</PaddingTop>
                          </Style>
// Add the following line.
                          <Value>=Fields!Bank_Account__IBAN.Value</Value>
                        </Textbox>
                      </ReportItems>
                    </TableCell>
...
 Existing code 5...
                                </BorderWidth>
                              </Style>
                              <Top>0.2115cm</Top>
// Delete the following line.
                              <Width>4.259cm</Width>
                            </Line>
                          </ReportItems>
                          <Style>
...
 Replacement code 5...
                                </BorderWidth>
                              </Style>
                              <Top>0.2115cm</Top>
                            </Line>
                          </ReportItems>
                          <Style>
...
 Existing code 6...
                            <PaddingRight>2pt</PaddingRight>
                            <PaddingTop>2pt</PaddingTop>
                          </Style>
// Delete the following line.
                          <Value>=Fields!Payment_History_Line__Bank_Account_No__.Value</Value>
                          <rd:DefaultName>textbox110</rd:DefaultName>
                        </Textbox>
                      </ReportItems>
...
 Replacement code 6...
                            <PaddingRight>2pt</PaddingRight>
                            <PaddingTop>2pt</PaddingTop>
                          </Style>
// Add the following line.
                          <Value>=Fields!Bank_Account__IBAN.Value</Value>
                          <rd:DefaultName>textbox110</rd:DefaultName>
                        </Textbox>
                      </ReportItems>
...
 Existing code 7...
        <Field Name="Credit_limitCaption">
          <DataField>Credit_limitCaption</DataField>
        </Field>
  // Delete the following lines.
       <Field Name="Bank_Account__Bank_Account_No__">
         <DataField>Bank_Account__Bank_Account_No__</DataField>
  // End of the lines.
        </Field>
        <Field Name="Bank_Account__Payment_History_">
          <DataField>Bank_Account__Payment_History_</DataField>
...
 Replacement code 7...
        <Field Name="Credit_limitCaption">
          <DataField>Credit_limitCaption</DataField>
        </Field>
  // Add the following lines.
       <Field Name="Bank_Account__IBAN">
         <DataField>Bank_Account__IBAN</DataField>
  // End of the lines.
        </Field>
        <Field Name="Bank_Account__Payment_History_">
          <DataField>Bank_Account__Payment_History_</DataField>
...
 Existing code 8...
        <Field Name="Payment_History_Line__Account_No__">
          <DataField>Payment_History_Line__Account_No__</DataField>
        </Field>
  // Delete the following lines.
       <Field Name="Payment_History_Line__Bank_Account_No__">
         <DataField>Payment_History_Line__Bank_Account_No__</DataField>
  // End of the lines.
        </Field>
        <Field Name="FORMAT_Date_">
          <DataField>FORMAT_Date_</DataField>
...
 Replacement code 8...
        <Field Name="Payment_History_Line__Account_No__">
          <DataField>Payment_History_Line__Account_No__</DataField>
        </Field>
  // Add the following lines.
       <Field Name="Bank_Account__IBAN_">
         <DataField>Bank_Account__IBAN_</DataField>
  // End of the lines.
        </Field>
        <Field Name="FORMAT_Date_">
          <DataField>FORMAT_Date_</DataField>
...
 Existing code 9...
<LeftMargin>1.5cm</LeftMargin>
  <PageHeight>29.7cm</PageHeight>
  <PageWidth>21cm</PageWidth>
  // Delete the following lines.
 <RightMargin>0cm</RightMargin>
 <TopMargin>2cm</TopMargin>
 <Width>17.9cm</Width>
  // End of the lines.
  <rd:DrawGrid>true</rd:DrawGrid>
  <rd:GridSpacing>0.423cm</rd:GridSpacing>
  <rd:ReportID>39ad1153-3bfe-4ce3-b12a-1470b491c4fe</rd:ReportID>
...
 Replacement code 9...
  <LeftMargin>1.5cm</LeftMargin>
  <PageHeight>29.7cm</PageHeight>
  <PageWidth>21cm</PageWidth>
  // Add the following lines.
 <TopMargin>2cm</TopMargin>
 <Width>17.95291cm</Width>
  // End of the lines.
  <rd:DrawGrid>true</rd:DrawGrid>
  <rd:GridSpacing>0.423cm</rd:GridSpacing>
  <rd:ReportID>39ad1153-3bfe-4ce3-b12a-1470b491c4fe</rd:ReportID>
...