I have a MacBook Pro and a MacBook Air, as well as an iPhone SE. I use iCloud to synch Safari bookmarks. Both computers run macOS 10.12.6 and Safari 11.0.3; the iPhone runs iOS 11.2.6. All this software is up-to-date. Synching has worked quickly and correctly for many months. Synching contacts and Keychain and Find My Mac continue to work correctly.
Yesterday, bookmark order and organization became random.
I tried to flush the Bookmarks data in iCloud by manually erasing the bookmarks on both computers, until both Bookmark lists were empty, then re-adding them (with a Bookmarks.plist file from my Time Machine backup) to one computer. They display correctly on whichever Mac I use…but when the second computer (previously empty) synchs to iCloud, Bookmark order on both computers is quickly randomized.
Multiple times, I've enabled and dis-enabled Safari in iCloud Preferences on both Macs, and enabled and dis-enabled iCloud itself on all three machines. I've reloaded new macOSs (from Recovery) on both Macs. I've hard-restarted the iPhone. The Bookmarks continue to scramble when a second computer is connected.
There are several hundred bookmarks, and many folders, and I don't relish sorting them manually. Is there any other tactic I might employ to maintain the sort order which appears when the archived Bookmarks.plist is first opened?