Problem to move messages

When I am as administrator and I will move a message of a forum for other, the change is made without problem, only that when I go back to the initial screen of the forum the amount of topics and messages are not updated. Example: I am had 2 messages in the forum TEST1 and none in the TEST2 and I move 1 of those messages for the TEST2 when I go back to the main screen of the forum the number of topics and messages in the TEST2 it does continue zero the message being inside of him and in the TEST1 it is not also made the updating. What can make?????????

Thank you for the help. 
 
Only one more thing worked doing what you said going in admin area go to Resync Post n topic count. 
 
But he/she has as activating an option that makes that automatically, without me to have that always after moving a message to have to go in admin area go to Resync Post n topic count.