There was no such problem before. It is very frustrating and feels like I'm playing in vain. Please fix this problem. And this problem exists in all scenarios
In fact, it has never been safe to rejoin a saved game, and it probably will stay this way for quite some time as this doesn't have a high priority. Your only chance is to do the scenarios and services in one go. I'm sorry that there's no other solution.
Jep, saving a game is pointless because u never know if it works. I don't expect it to get fixed, otherwise they could have put this on the Roadmap because it's a known bug.