I came back to the game after a year and I have lost much progress. I dont have assaulters 2, I didnt have infantry 2 I needed to rebuy kar98 with grenade launcher even though I had like 10 of them before the update, I dont have radio operators, what is going on?
THE MERGE™ happened. It combined all campaigns into factions. Unless you had everything unlocked, you would lose access to things you seemingly unlocked before. For example, if you unlocked AT II in Moscow you would have access to AT-trooper II, but after the merge the squad was relegated to being AT I with AT-troopers I, locking you out of II tier. The same happened with other unlocks, they got a different squad assigned (one you didn’t unlock pre-merge) to them, locking them back and requiring you to research them.