"SMART" Folder naming and sorting! Syncing folders from earth to sky to heaven (or hell?)

I wanted to be smart, and "fooled" the alfasort in FireFox by giving my folders names like "00 FOLDER A, -"- B, -"- C",..... "01 FOLDER A, -"- B, .." ,.... "02 FOLDER A", -"- B, ...."- FOLDER A" , "- FOLDER B", "FOLDER A, -"- B, -"- C"
After syncing, all folders with names starting with numbers have disappeared!!

I have two identyties on the same laptop, (on separate disks)
1. Win XP Pro NO, FF 3.5X NO(Newest NO rel), IP NO
2. Win 7 US,FF 3.5X US(Newest US rel), IP US

I have no use for 3 backup cathegories, so I use only mobile

I synced the NO id, and entered the US id the day after. I could not find any of the folders starting with numbers?? Where have they gone?