C.A.R. can compress all of the logbooks into a single .ZIP file for backup and safekeeping. The ZIP capability is built into C.A.R. and doesn't require any other software. It will automatically break the backup into small enough pieces should it not fit all on one disk.
The backup can be made manually with the button shown, or C.A.R. can ask any time you exit after making changes.
C.A.R. can also restore the all of the
logbooks from the ZIP files it creates.