I created a sync account and synced my bookmarks from firefox on android to firefox on mac. Afterwards I made a backup (saved to html) of my bookmarks and cleared them on both devices. Then I imported the bookmarks onto a third device (also mac). However the bookmarks synced from android weren't included in the html file... they arent in the firefox bookmarks back ups, which I have restored to check.

Is there a 'sync history' function of firefox sync? If not, where can I find these lost bookmarks. Thanks