Whenever a dynamic member is added to a queue, the member name is set on that command also. If that name is old/incorrect/not the one you want, then it is up to modifying that action in the dialplan, or program that performs the dynamic adding, to set the correct name.
So, if you use some feature code to dynamic adding agents to a queue, review that dialplan bit and see what member name is being set.
Solution is in your dialplan/configuration. FOP2 is making something visible that you probably did not see before.
But I insist, I do not know your setup, I do not have enough information to be conclusive, I am just mentioning something that usually happens, and that might be happening to you. Always contrast the data you see on FOP2 with actual activity on the queue_log file or the output from: asterisk -rx "queue show".
Check names there also, not only in FOP2.