Attempting to use the planner to upgrade burner inserters into yellow inserters returns the burner (and fuel) to my inventory, takes a yellow from my inventory, but doesn't place the yellow down. It just gets consumed. Same with the other way around (turning yellows into burners picks up the yellow, removes the burner from inventory)

I haven't tested with machines or belts yet, but I assume the same will happen. I'm currently running full bobs, angel refining, yuoki, and a lot of QoL mods, including HandyHands, Autofill, Picker Extended, there is my ghost, and nanobots (the mods most likely to conflict). I also added this mod to an existing save without it; didn't start with it enabled.