I moved my database and backups to new folders, but lost all my contacts.

I set up the new folders and copied all files, etc. to the new ones. It all seemed to have worked, but now all my contacts have disappeared. I have Local folders ticked, but no contact folder appears, either.
Using Notepad to open one of the Contact database files in the new folder, there are contact details in there, but I have no idea what has happened.