Recover previous versions of a PDF document saved to the DocumentCloud

[Pablo5E60]

Hi, 

I was working on a PDF file, basically just adding notes and highlighting on the Document cloud web app through a web browser. However, the document became corrupted after refreshing the page. 

Is there any way to recover previous versions of PDF files in the DocumentCloud?

Otherwise, can anyone suggest ways of synchronizing files between devices so the added coments are updated in all of them?

Thanks!

[Stacie29426262t6j3]

Hi. Is there a way to recover a previously saved Adobe pdf file that was accidentally deleted? Is there a way to revert to a previous version of a current pdf file? I accidentally deleted a file that was not saved on my cloud instead of saving it ON the cloud.