We've found a bug in 7.5.7.

If you move a thread from a forum to another location, and tell it to leave a pointer at the old location for a day, and notify the topic starter, it will move the pointer post and the topic to the other forum.

The pointer post will display "This topic has been merged." which will freak you out, but no worries -- it doesn't.

It is repeatable, and happens when using the edit button or inline moderation, for single or multiple threads.

SD has been notified and was able to reproduce the bug.

guod@simhq [dot] com