How does losing/scrapping research structures work exactly?
In a recent game with friends I decided to scuttle a Vasari military lab after doing the Kostura Cannon research so I could make space for a different Logistics structure. However, later on, I was surprised to find out that I couldn't build a Cannon even with the research without rebuilding the 8th military lab. Are ship/structure techs the only things that work like this or do passive improvements to ships, economy and the like stop "working" as labs are lost as well?