When I upgrade a critter using the traitstones some of the traitstones required for the next upgrade vanish. Not the ones consumed - the entire class of stone. Here are before and after pics.
Could somebody explain what’s going on? before upgrade
after upgrade
It’s adding them up.
In your first picture, the traitstones required for trait 3 are what you need to get all of the traits, so 1 ,2 and 3.
In the second picture, you already have trait 1, so the traitstones required for trait 3 are those you need for trait 2 and 3.
Ohhhh. OK, got it.