I used Itunes to synchronize the bookmarks on my iPod with my desktop, and Itunes deleted all of the bookmarks on my iPod and replaced them with bookmarks from my desktop. I attempted to retrieve them by restoring from backup. Itunes restored bookmarks from a old backup of the bookmarks on the iPod. I attempted another restore from backup using the most recent restoration point. After that restore, I had a combination of bookmarks from the old backup and bookmarks from desktop. The bookmarks that I had stored on this iPod immediately before synchronizing are still missing. Is it possible to retrieve these bookmarks, or have they been completely removed by Itunes?

Please help!