User Activity details missing after moving forum
 

Hey Guys. I recently moved my forum from:
oldserver.domain.com/forum
to
forum.domain.com

after the move i noticed that the details of a user's activity was not showing up. for example, the user activity now displays:
Quote:
Last Activity: Today 05:47 AM
Current Activity: Viewing Thread
as opposed to
Quote:
Last Activity: Today 5:53am
Current Activity: Creating Thread vBulletin 3.8 Questions, Problems and Troubleshooting
The same for the Who's Online list.
The forum normally states which thread a member is viewing, but after the move it simply displays "Viewing Thread"
The only location it still reveals is the Forum Index.

Any suggestion?