Ongoing data backups prevent data loss! Use the occasion also for example before an update.
A) Explicitly:
(context menu| Create backup file) or in the open ORCA AVA file via ..B) When opening files, depending on the settings, a backup file can be created automatically:
. (Settings | ORCA AVA | System: Data Backup).
Data you have edited with a new program version can subsequently no longer be used with older program versions.