Try setting additional_pastable_entities on the storage tank prototype. That did the trick! Thank you very much! :D Documentation puzzled me a bit b/c it sounded like it changes only the paste side logic. But this worked perfectly with copy-entity-setting input properly setting LuaPlayer.entity_cop...

I'm trying to extend chests and storage tank, storing extra data in the global. And I got to the point where my entities are blueprint-able, and I can copy/paste settings on chests using shift-clicks. Then I realized that unlike other entities, copy/paste settings (shift-right-click & shift-left...