My recollection is that after the crash in May 2008, you could ask Petra to manually reconnect the new user account that you had to set up after the crash with the user account you had before the crash. I was one of the people who didn't bother with making that request at the time. However, about two years ago or so, I asked Petra if it was still possible for her to do that and she told me that by that point it was no longer possible to do it, too much had been lost by then. I set up my Stratics account back in about September 2004, a few months before I started playing UO, so I could post in the TSO forum, but my join date is May 12, 2008.When I asked to have my old account recovered unfortunately, it was not possible so I just made a completely new one. Some of the data from back then is still available, but like I said it is extremely random and fragmented. I'm not sure if getting your old account back would include the posts, but it might.
The technical things like that are the specialty of @Nexus if you want to talk to him about potentially trying to recover your old account.