User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-5785681-20200814183512/@comment-1869454-20200815051715

It'll look similar, but not identical. Some buttons / links get moved around and the stylesheet gets changed a bit (eg spacing in tables gets altered, that sort of thing).

We use and tabber and we got migrated already. :( Those two things do still appear to be working, at least.