Lezley (GB1) said:
That research is for the per hour build item, one you trying to upgrade is the base production build item.Per hour you can build and upgrade yourself.Base you can't upgrade, only win or buy from various places at various levels.
Ivan Again (INT4) said:
It's very difficult to tell what blueprint research is for what build item (or even what building. eg Is a certain recruitment blueprint for the barracks or the drill ground?). You can't tell just from the research tower. You have to switch back to the construction yard to try to figure it out, then go back to the tower. It's a pain.
Hang on. Food or base food production. U can't upgrade base food production.
PC players could, but it was removed from the game after 3 days.