A managed solution that contains an entity that is 'Wall Enabled' is imported. When attempting to import the managed solution, it fails with error:
"A managed solution cannot overwrite a SavedQuery component on the target system that has an unmanaged base instance. The most likely scenario for this error is that an unmanaged solution has installed a new unmanaged SavedQuery component on the target system, and now a managed solution from the same publisher is trying to install that same SavedQuery component as managed. This will cause an invalid layering of solutions on the target system and is not allowed."
"A managed solution cannot overwrite a SavedQuery component on the target system that has an unmanaged base instance. The most likely scenario for this error is that an unmanaged solution has installed a new unmanaged SavedQuery component on the target system, and now a managed solution from the same publisher is trying to install that same SavedQuery component as managed. This will cause an invalid layering of solutions on the target system and is not allowed."