Hi Virfranz Man
I have the same problem.
I made a document in Word2016 (outlook365) on 2-25-2018 on my pc. It had 12 pages.
I copied this document to my laptop while travelling to the USA. In the USA I made changes to this document almost daily. No problems were noticed.
To be safe I sent the docment (now about 30 pages) after a few days with my gmail-account to my own mailbox.
Yesterday I came home and moved (not copied!) the document (now 50 pages) to an USB-stick and copied it to my harddrive.
The document was now only 12 pages!
I opened my e-mailbox to restore the document I made when it was 30 pages: and that file has also just 12 pages. In both cases the date is set on 2-25-2018. That was the document I made at first!
Both my laptop and PC runs on WIndows 10. My laptop has Word 2007.
On my laptop I saved my document under /documents.
On my PC I save the document on a WD My Cloud Mirror.
Of course: I should have saved it directly in the cloud, but unfortunatly I didn't.
What is reason that the changes in my doc-files have disappeared?
Marcel Beijer
The Netherland