In the last week I've had issues with education buildings being missing from the menu and my unique buildings becoming locked again. The vanilla version of the University disappeared., so I unsubscribed from all mods and assets and restarted steam. The University reappeared but now one of the high schools is gone. The unique buildings come and go as they fancy. Sometimes its just 5 or 6 that have locked themselves but right now its almost all of them. I was trying to reopen them but they just lock again. This is very frustrating. I'm assuming that if I try to open a saved game in which I used any of these items the game would remove them or break. I don't want to risk loosing the hundreds of hours of work. Please can someone help!