We have the hierarchy as below in BMIDE.
DocumentRevision (OOTB)
-BusinessObject1 (Under DocumentRevision)
-BusinessObject2 (Under DocumentRevision)
On BusinessObject1, indexing has been ENABLED for the DocumentSubject OOTB property.
On BusinessObject2, indexing has been DISABLED for the DocumentSubject OOTB property.
Performed deployment of the above changes.
Merged the schema.
Cleared the indexing.
Performed the reindex of all objects.
Performed the global search related to BusinessObject2 from AWC, DocumentSubject has been present in the AWC search filters.
As per the expectations DocumentSubject should NOT be present.
Solution
It's Designed behavior. As, the schema generate on class.property.
Notes