they just keep evaporating. I’ll assign bones to a bone group, deselect all bones, then select them via the bone groups dialogue to make sure it works, and it works!
So it took me a bit to figure it out, but I figured out is was because I was assigning for example left leg bones to the left leg bones group, and then assigning all leg and spine bones to the LegsAndSpine group… but I guess that is a no-no, because now my “leftLeg group” doesn’t select anything when I click “select”.
How frustrating.