Thank you for the follow-up, Sporkman.

If you would send those crash reports to our support email, I'd like to have a look at them.  If you are not sure how to find them, I just finished uploaded a new version (317) of our Trouble Zipper which, I think, successfully works around all of the latest security hurdles Apple has built into macOS 10.15.2.

Trouble Zipper will scrape out all crash reports for our apps by default.  To run Trouble Zipper, run any of our apps and click in the menu: Help > Trouble Zipper.  The app will download and run the latest Trouble Zipper.  For just sending crash reports, answer Don't Include to the several questions asked by Trouble Zipper.  Crash reports are always included, provided that you answer Allow when it asks for permission to access system files and write to your Desktop.

sporkman wrote on Nov 4^th, 2019 at 6:54pm:
When you "Started sync", it should have prompted you to Export, which would have puahed all of the bookmarks from Synkmark into the empty Safari.  But two steps later, you saw the bookmarks in Safari were "very limited" and "random".  This leads me to suspect that maybe your iCloud bookmarks need to be rebuilt.  You almost did that, though, because "nuking" all bookmarks in Safari is the central step in the rebuild procedure.  You did not say, however, that you waited at least 20 minutes to ensure that iCloud did not resurrect any of the nuked bookmarks.

sporkman wrote on Nov 4^th, 2019 at 6:54pm:
That fix is only for when you saw a little windnow that indicates Processing….  If you are indeed seeing Waiting…, it is a different issue.  Also, we have had no reports of getting stuck on Processing… now since December 2018.

sporkman wrote on Nov 4^th, 2019 at 6:54pm:
Yes, this does indicate something is wrong.  If indeed you just started over, there should be at most 12 .sql, .sql-shm and .sql-wal files.  You have around 50, indicating that five or so new Synkmark documents have been created since you started over.  There should be only one.  Something is not working.

sporkman wrote on Nov 4^th, 2019 at 6:54pm:
I think that Reset and Start Over… does nuke that whole directory, or at least empties it out.  You can't really see that because it immediately starts repopulating it with new files.  I think it probably did clean it as expected, because, as you noted in your later edit, all file modification dates are after your Reset and Start Over… time.  In addition to cleaning out this directory, Reset and Start Over… also resets most Preferences, but those are usually not a cause of trouble.

I think you should Reset and Start Over… again, with some extra insurance steps….  If anything does not work or indicates an error, stop the procedure and tell me.

• Ensure that you have a recent version of Synkmark, 2.9.15 or later.
• Reset and Start Over…, indicating Safari and Brave.
• Click in the menu: File > Save.
• Verify that the window's title is Synkmark.bmco, indicating that this file has been saved to disk OK.
• Assuming that this window imported and now contains the garbage currently in Safari, click in the menu: Bookmarks > Delete all content.
• Click in the menu: File > Import only > Choose file (Advanced), .html.
• Click in the menu: File > Save.  Verify that nothing bad is indicated.
• Reorganize bookmarks as desired.
• Click in the menu: File > Save.
• Nuke all bookmarks in Safari.
• Wait 20 minutes and verify that no bookmarks reappear in Safari in any device.
• Verify that Synkmark has Full Disk Access.[/i]
• Click in the menu: File > Export to all.
• Immediately, verify that Safari has the bookmarks from Synkmark.
• Wait 20 minutes.
• Again, verify that Safari has the bookmarks from Synkmark – that iCloud has not changed anything.
• In Synkmark, switch on Syncing and, when prompted, Export again.
• Immediately, verify that Safari has the bookmarks from Synkmark.
• Quit Synkmark.

sporkman wrote on Nov 4^th, 2019 at 6:54pm:
It's on our list of things to do.  I hope to get to it soon.

Hello, sporkman.

Thank you for contacting us.

As you have described your "cycle", I do not see that you ever switched syncing back on.

Regarding how to start over, the answer is:

• Launch Synkmark.
• Click in the menu: Synkmark > Check for Update.  If necessary, update to the latest version.

This group of steps is only needed if using macOS 10.14 or later…
• Click in the menu:  > System Preferences.
• Click the pane "Security & Privacy".
• Click the tab "Privacy".
• Scroll down to "Full Disk Access".
• Add "Synkmark" to the list.

• Click in the menu: Synkmark > Reset and Start Over…
• Follow the instructions given.  In particular, be sure that, at the end, you switch on "Syncing" (showing a big yellow dot) and then quit Synkmark.