Hello, Bob.

Thank you for contacting us.  Several things could do that, but none of them is likely.  The quickest way to solve this is to add a bookmark and send us your data which will show us what happened.  To do that,

• Launch BookMacster but close that Bookmarks.bkmslf document window.
• Look at the clock.
• Add a bookmark in Safari.
• Wait a few minutes and verify that it gets deleted.
• Activate BookMacster.
• Click in the menu: Help ▸ Trouble Zipper
• For Question B (Bookmarks), answer "Include Bookmarks"
• In the list which appears, choose "Google Chrome", then, holding down the ⌘ key,  "Firefox" and "Safari".
• For Question L (Sync Logs), answer "Include Sync Logs"
• For Question F (Files), answer "Search".
• In the email message that is produced, tell me the name of the bookmark that you added and the time that you added it.
• Attached the Trouble.zip file and send the email.

If you prefer not to send your data, let me know and we'll solve the problem a different way.