I made a new creature, saved it and then later adjusted it so it seems to load the creature from save after you go "back".
The first, that they move less in general. Some just twitch a little, that's it and like was said in the other thread, the best is often discarded.
I had a batch of climbers, one of them fairly quickly climbed up pretty fast and in the next batch it was gone.
I can see that happening when parameters change but it would be nice to have some sort of "backup" to return to if the new parameters are worse than the previous, if that makes sense?
Still having a ton of fun and finally got something to actually climb. :)