Something odd happens when I try to merge threads. Tried three times now, same result every time.

I tried to merge these:
http://edcforums.com/showthread.php/...backup-and-why
http://edcforums.com/showthread.php/...r-backup-knife

When click on "merge threads", it asks me to log in again to verify that I have permission to do it. That's normal, it always does that. But now, after I re-log in, instead of seeing the merged thread, I get redirected to the EDCF Supporter Badgeholder Giveaway thread for some reason. Strange.