vBulletin 3.6.1 Data Loss Issue

[Smoothie]

Can someone please explain what this mean?
http://www.vbulletin.com/forum/showthread.php?t=202390

A bug has been discovered in vBulletin 3.6.1 that can result in data loss when the automatic thread redirect deletion system is used.

What the heck is the automatic thread redirect deletion system?

[conqsoft]

When you move a thread in 3.6.1 you can choose to have the thread redirect auto-removed after X amount of time, automatically.

[Smoothie]

I did not know that, thanks!