SPD Server 5.1 backup
and restore utilities are not compatible with SPD Server 3.
x and
earlier releases. You cannot restore SPD Server 3.
x backup
files using SPD Server 5.1 utilities. You must use your SPD Server
3.
x utilities to restore SPD
Server 3.
x backup files, and
then archive the restored files using the SPD Server 5.1 utilities.