AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual page 56

Using SPM
Convert uses two files: the existing backup file (the "convert from" file) and the
converted file (the "convert to" file), which is created when you run the
Convert option. The converted file contains system programming information "
in an uncompressed form. The "convert from" file is unchanged. Because
uncompressed files take longer to process than compressed files, you may
want to restore this uncompressed backup to the old control unit and then
create a new backup. This new backup is in compressed form and does not
have to be converted. For more information about compressed and
uncompressed files see "Backup."
To convert system programming to Release 3.0 format, Version 3.XX of SPM is
required. This version can be easily identified by the version number, V3, in
the upper left corner of the screen.
Help screens are available to guide you through the Convert procedure. See
"SPM Help."
Before you use the Convert option, you must complete the following tasks:
If your PC has a hard disk, install the appropriate version of the SPM
software. See "Upgrading the System."
Back up system programming. See "Backup."
Make sure you know the name of the backup file that you have
created.
IMPORTANT:
Once the actual file conversion begins, you cannot stop the process; pressing
38 System Programming and Maintenance (SPM)