Passwords gone after restore

Hello Comodo Community!

I hope that this wasn’t posted here before. I reinstalled my Windows 8.1 Pro N (upgraded from 7).
So I decided to use the Comodo Backup Program for this. I chose the Comodo Dragon Browser and it backed everything up. After I reinstalled my Windows Version I used the Backup Program, but it only restored my Bookmarks & Homepage. Last Time I did it it worked fine, but this time all of my passwords are gone. I also tried an older Backup (the one that worked) but nothing changed.

Please help me.