Hi limebrook1 this is one of the problems with upgrading. any modifacations or avatars or or images go walkies. when you upgrade it replaces old files with the new files. so any changes you have made will disappear. best to use the same forum then add things to it.
i am still useing 2.19 with 23 mods in it if i upgrade i would lose most and have to do them all again by hand. for the small change the upgrade does it's not worth it.