That gets tricky and isn’t recommended. Especially putting resin back into a cartridge as it can contaminate what’s already in it. They recommend a tank for each to avoid this as cleaning tanks kind of sucks.
Having different tanks for each material is easiest but you can certainly empty the tank and re-use it with another material. If you’re looking to use a tank with a different material, filtering the resin into a funnel and back into the cartridge is best practice.