Forum Merged users still show up on last post?

[محروم.كوم]

I merged 2 users today on my test board* and I found that all of the threads I last posted in still reports the old name. When I click into the thread it is the new user* when I click his name* its the new user* but on the last post display it has the old account name. Is there a particular cache I have to delete or something to fix this? __DEFINE_LIKE_SHARE__