The majority of content and features that Vbulletin offered were migrated over to the new software. One of the most noticeable things that is missing are the numerous built in avatars. I had a collection of railroad logos and clipart etc. Xenforo doesn't support a forum avatar gallery. They simply use custom avatars that you upload yourself. So, you may find the one you had previously is gone, but you can easily upload a new one of your choice.