I fixed it that way (hope to remember correct) that I unstick the thread, post a dummy reply to it. The dummy becomes the new first post but be sorted in dates. After this I can merge and move all as it should.

my board: http://www.dragonclan-forum.de
my hobby: http://www.biker-reise.de
Ich kann bei Fragen zu UBBthreads in Deutsch weiterhelfen oder es zumindest versuchen