Well, it had to happen one day. I did some small tweaks to a Markdown document in DTTG, synced to DT on desktop, and realised a split-second too late that I’d made edits to other parts of that document on desktop a couple of days ago without syncing the changes. Because my sync settings were Use Latest rather than Duplicate, the older version with the more important edits was overwritten.
Is that the end of the story? Is there any way to get my previous edits back? Lesson learned the hard way, but sooner or later every longtime user will have this same brain outage once, so it’s worth asking the question even though I’m pretty sure what the answer is. (This was a Bonjour sync, sadly; other sync methods have rollback options, but I suspect I’m out of luck here.)