Question

Is it possible to to force Plesk Automation to move previously created backup files from the PA service node to backup node in case if backup node was unavailable during backup creation?

Answer

At this moment it is not possible in PA to force PA to move previously created backup files from the PA service node to backup node. In this case the best solution for this issue will be to remove the backup files from theC:\Windows\temp directory manually, return backup node back to availability and create a backup of subscriptions.

The issue reported is a Feature Request. It cannot be fixed without the Source Code interference.