KB11920: Report cache is invalidated and report executes again after modifying the report format in MicroStrategy Developer 9.4.x - 10.x

SYMPTOM
After making formatting changes, the report cache is lost and the report is executed again even though the data has not been modified.
 
STEPS TO REPRODUCE

• Confirm the report version under Report Properties as shown in the image below, and open the report in Strategy Developer.
   
  

• Make formatting changes in Strategy Developer. Verifying the report version again shows that the version has changed as shown in the image below:
   
  

Since the version has changed, the cache is invalidated. Therefore, the report does not hit the cache but is executed again.
 
CAUSE
This is working as designed. Formatting changes result in modification of the version ID of the object. The existing cache is invalidated because the report version ID has changed.