KB33241: The ID form of all existing attributes in the project is missing after project duplication in MicroStrategy Developer 9.x

SYMPTOM:
In Strategy Developer 9.x, the ID form of all existing attributes in the original project is missing after project duplication, as shown in the image below:
 
Before project duplication
 

 
After project duplication 
 

 
NOTE: Newly created attributes do not exhibit this behavior.
 
CAUSE:
This problem reflects a metadata inconsistency caused by an incorrect project duplication.
 
ACTION:
Use Object Manager to migrate the incorrect attributes following  the steps below:
 
 

•  In the original project, modify the affected attribute's description in order to refresh the version ID as shown in the image below: 
  

• In Object Manager, manually migrate the attributes from the original project into the duplicated copy. Select  "Replace" as action in the Conflict Resolution window as shown in the image below:
   
  

• After the migration is completed, update the schema in Strategy Developer. Verify that the missing ID forms are restored in as expected.