So I built a pillar base out of T2 stone brick. I’ve started upgrading to T3 black ice but I’m discovering that while I can upgrade the foundations attached to the rock pillar, the outer “suspended” foundations will not upgrade — instead it just gives me an option to place the T3 foundation on top of the existing T2 foundation. Even foundations that touch the ones I was able to upgrade have this problem.
I’m having no upgrade issues with walls, doors, or ceilings – just the existing T2 foundations not attached to the actual rock pillar.