Option1: moved the project from the Network drive to local and carried out the merge and it worked without any issue.
Option2: Even after expunging users from the Admin module, Users are still locked on some of the databse file found by Microsoft tool by IT administrator from the Server. Expunging them from Microsoft tool from the network drive helped to resolve the problem
Still not sure what could be the reason for users are not expunged fully from the database file and need a support of the Microsoft Tool.
Option1: moved the project from the Network drive to local and carried out the merge and it worked without any issue.
Option2: Even after expunging users from the Admin module, Users are still locked on some of the databse file found by Microsoft tool by IT administrator from the Server. Expunging them from Microsoft tool from the network drive helped to resolve the problem
Still not sure what could be the reason for users are not expunged fully from the database file and need a support of the Microsoft Tool.