In our company, recently few days back all the uses complaining one by one that whatever they work and save in the file, the work is lost next time they open the file.Below is what user mentioned in the mail. Please help if there is any patch need to rectify this problem.
I worked on very important project yesterday, but I have to make that project 4 times.
Because after 15 min my drawing completely gone, I have to redraw from beginning.
Please fix this issue as soon as possible.