navision windows login id changes after login

Dear all,

I am facing a strange situation here, my customer recently changed/renamed one of the user windows login (Eg: from 'abc' to 'abc.d'), The SQL Login is changed accordingly(deleted old and created new) , the citrix userid is also changed in citrix server (user claims). They restarted the user pc, reinstalled citrix receiver in client machine, refreshed. In navision and SQL server the userid is showing as 'abc.d', but when the user logs in using windows authentication it shows as 'abc'. Without having 'abc' in the SQL/Navision how Navision showing the logged in user as 'abc'.

I am unable to find where is the link still existing which i need to refresh.

Any idea?

Thanks
Vineeth