Upgrade planer can be use directly without config, this is expected to "upgrade" all upgradeable item by default. But reverse factory to it in reverse 4 lead to 3 to 2 to 1. Funny but a little annoying.
Is that so? Hm, that's odd. I'll admit, I've never actually used the upgrade planner, just assumed I had the buildings defined correctly. I'll have to check this when I have the chance.
Wow, just changing a minus to a plus... I have these things dynamically created, and in that function, I was subtracting a tier for the next_upgrade target, instead of adding a tier. So simple...
