I am the very model of a scientist Salarian, I've studied species Turian, Asari, and Batarian.
I'm quite good at genetics (as a subset of biology) because I am an expert (which I know is a tautology).
My xenoscience studies range from urban to agrarian, I am the very model of a Scientist Salarian.
Nothing, because I'm on console and I know what skills I need for toons that I play a lot. The only ones that mightn't "come back the same" are my baby toons and any of my lvl 50s that I want to switch the build around on (looking at you my very first toon who isn't my main but has been about 10 different builds already).
The only thing I might do is take a screenshot of is where each skill is on the bar, especially to ensure the toons I use but not as often so they go back the way muscle memory needs to be without trial & error.
I have 200+ on all my characters... I'm not worried about a mistake or two. Besides gonna have to look at skills and gear. Lots of changes and some skills might not be worth the points any more.
Take a picture with my phone of each skill bar just in case but probably just it from memory. Don't think it will be to hard just a little time consuming with 18 characters.
When is Update 29 planned to be released, anyway? Is it going to coincide with the next Dungeon release-- that is, the first DLC in the 2021 storyline?