Re: Doubly unusable if he moved the document
If he started the document under LibreOffice (which I suspect he did)
No I didn't.
I wrote the bloody thing in Scrivener (which is at heart an IDE for complex compound documents like, oh, trilogies), then generated a word document as output because my editors insist on working in Word because corporate IT at the big publishers thinks everyone uses it, even though many deeply serious professional authors won't touch it with a barge-pole.
Unfortunately $EDITOR edited the word doc with change tracking. Then $EDITOR scribbled on a print-out with red ink. And they want me to make another pass through it and do some structural changes. So my workflow is:
1. Go through change-tracked manuscript in Word (or LibreOffice) doing accept/reject on changes (I get to veto them at this stage).
2. Go through change-tracked MS and PDF scan of hand-annotated print-out, applying handwritten changes. (Thankfully, not as many of them.)
3. Import resulting document into Scrivener and try to rebuild the book's structure and metadata by hand.
4. Retire to the pub, weeping copiously, to consider the possibility of switching to an exciting and fulfilling career as a car park attendant or a tax inspector.