My old computer HD crashed after I transferred my user files to the new computer, so I have only the address book .mab files restored from an external backup drive, not an exported LDIF file. Can I simply copy the .mab files from the old profile folder to the new one, or is it necessary to do the export/import procedure recommended in this forum? I guess the export/import will involve reopening Thunderbird using the old profile, doing the export, then switching back to my new profile and doing the import. It would be much simpler to just overwrite the tiny new .mab files if that will work.