I am changing to a new laptop. I had previously synced them to the new computer successfully. I was finishing up the old laptop and preparing it for someone else, when I did this dumb thing: since the bookmarks were on the new computer, I went ahead and deleted them from the old computer. However, there were some new bookmarks that I made in between the time I synced it last week and my actions this morning. Well, stupid me hit "sync" again, thinking it would just add the new bookmarks, but it erased the old bookmarks. Now I can't find them on either computer. I really need the old bookmarks. I have tried some of the online steps to recover them (no, I did not save them previously). Is there anything I can do, or are they lost for good?

Thanks for your help!