1/18/2021: ARK Dev Kit v321.1 is now available on the Epic Launcher

We talked about this exact problem with the new feature yesterday in the discord chat. For actor based blueprints there is a “Do not cook” flag(i didn’t test if it really does prevent cooking though), but for example on PrimalItems or Engrams that setting does not exists.
I would suggest giving us two options in the cooking window, one for the old and one for the new cooking variant.