There's a possible fix here, not sure if it will work
http://www.gnutellaforums.com/showth...threadid=49453

You might just have to live with them starting from scratch
The thread has some tips for avoiding this again!

**Replies to posts aren't working at the moment.
Reply by PM will work. You'll see an error page but the message still goes through.
Else, start a new thread titled "your original thread - merge".
A moderator will merge threads when they get the chance.