HI Sankar
I was trying to keep it simple - does the composite role appear in the AGR_USERS table for the user (same as roles tab and shows if single role is via inheritance or directly assigned)
You are right that two composite roles with the same single role will not tell you which role (unless validity dates are different). But you can see mapping in AGR_AGRS of the roles.
Have you executed PFUD as well?
Regards
Colleen