I completed all of Lunden up until the last three glitched Mysteries for me. Tried reverting a save to see if they were still like that before. I did save before I loaded the earlier save. I lost 4 hours of Gameplay going back. My saves are no longer there. I would like to know why this happened?! What bug is this because I am upset!

I am in Lunden doing the Mystery where you help the man out of the warehouse. I went to move the first barrier out of the way and pulled it straight out towards the door and now it is stuck and will not move at all. I tried everything but reverting the hours upon hours of gameplay I have done after walking away from this mystery. Can someone help me find a way to fix this without losing all of my progress in game after it got stuck?