So This could be a number of different issues but it continuously happens so here we go..
Intern at work is doing product videos (been here just less than a year) and whenever I have him go back to fix something, his sequences are getting deleted and the work within the sequence is half finished. I know he is doing the work because the exports are there, its when he re opens a project to fix errors within AE and Pr that the issues happens. Now I have auto-save on and he can go back to those but those are also deleting his work as well. I dont know if this is a user error or if the computer hates him but I have never had this issue myself and it is becoming a serious problem. From here out we will use the newest Premiere but I am afraid to open old projects now in case we need to go back and fix something (which happens often).
Let me know if I am crazy or if anyone else has had this experience as well.