The issue was found and fixed with
- Release.Manager 9.0.0,
- Release.Manager 8.0.2,
- Release.Manager 7.0.6
The Package is available for download at the Automic-Support-Zone (https://support.automic.com).
Hotfix-Description: Deep Export fails when a folder name contain periods. A change has been made to prevent errors in Deep Export feature when an application folder or a workflow folder contains period characters.