Nope, that’s where it becomes weird.
I copy from the layer 1 then trying to paste into the layer 2 and AI paste into the layer 1. To avoid this what I’ve tried is to lock the layer 1 to force AI to paste into the layer 2 and then I get that msg.
That’s weird because on another computer I do the same thing and it works. I can copy / lock and then paste into a different layer without any problem. Or I can copy from one layer and paste into another one.