Highlights disappeared

[a16]

Suddenly a pdf I've edited and saved a few times has been reset to it's original file, with the last edit showing the day I downloaded the file. Even in revent files, I can see the highlights in the small thumbnail of the file, but they are not there when I open it. 

[try67]

Open the file and then open the Comments panel and make sure that the Filter setting is set to show all comments.

[Patrik5EC9]

not applicable to this problem

[Jose Santino0101]

Did you somehow solved this problem? I cannot with mine. Twice it happened and it is so infuriating!

[Patrik5EC9]

I had the same problem today and lost a whole days worth of work, extremely frustrating. Seems like a common problem? Any fixes?

[Patrik5EC9]

I was using a file remotely from Dropbox, but it usually works fine when saving a copy in the same place. Tried it today again and it works.