Quote Originally Posted by 'Ohitekah',index.php?page=Thread&postID=126256#pos t126256
Quote Originally Posted by 'thinus',index.php?page=Thread&postID=126136#post1 26136
There will always be a timing issue probably dependant on your latency. Your slave does not aquire the target from your other WoW client, it queries the server for the target. So when you select a target on your main it takes a little bit of time before the server is updated with your character's new target.

In short, you cannot select a target on your main and immediately have your slave change to that target as well.
That is what I thought it might be. Thanks a bunch, I appreciate you took the time to respond. Have fun out there.
You can see this same exact behavior by setting your main's focus to your main (focus = self) and then adding an /assist focus line to your macro. Then switch targets and hit your assist button quickly. You'll see yourself switch back to previous targets quite often. :P