Not intentionally but it kinda works out that way as there's a nasty bug which seems to reset it sometimes. Did you edit your profile recently by any chance? http://www.belltreeforums.com/showthread.php?54737-Ask-the-Staff&p=1293010&viewfull=1#post1293010
It's very cheap to repurchase the item so I don't consider it to be a big deal. Not that I can do anything about it though.
Odd bug. I added my birthday to my profile.
Thanks!