My edits are not saved

I finished editing a catalog last week, it was completely fine I even exported a few images to JPG. 

Today I was ready to do some small changes in a few pictures and was prepared to export the entire album for a client. 

Whenever I choose a picture it will say that is loading and suddenly all my edits were gone! You will see some in the previews but once you see them in develop they're not there. 

I tried to export the more obvious (B&W) to JPG to see if the previews were the problem, but it didnt work. 

I need help!