Adding mod when required research already complete fails to add the item to the game

[MrDrummer]

I've added this mod since researching the required tech, and the switch is not available.

I think you need to do a simple check on first load if the required research is already completed, and if so, unlock the item.

EDIT:
Screenshot of research:

Screenshot of Logistics tab:

[theRustyKnife]

You are completely correct, I'll fix this once I'm done with updating Crafting Combinator.
Cheers TRK