But uvhm aways scales to the player’s level anyway, there shouldn’t be any difference. besides, farming legendaries for uvhm unless you don’t have any lvlcap increase dlc you’ll just waste time finding *weapons that will be replaced 4~5 levels later.
*classmods and relics can hold for much longer though
It’s level 35 because you are starting it in Normal mode. Start in True and it will bump to 50, if that’s your current level and heven’t been in it in True yet.
Are you sure it was TVHM? You said that you went there after beating Terra and he was 50 (actually, 52), but Terra is 52 in Normal Mode too (I’ve read that he has less health in Normal, but he’s the same level).
I have seen several people post in the Steam forum about problems with HH DLC levels in Normal Mode and TVHM, so it does seem that they can glitch somehow (it’s never happened to me). But hopefully you were just in Normal.