in ARIS 7.1, you can use the Versioning feature to versionize old models (only possible if the DB was created with versioning support).
- Select the models or groups you want to versionize in the explorer
- open the context menu and click on the item Versioning
- Enter a discription in the wizard and press finish
If this is done the models are verionized. You can delete the models now in the explorer. If you want to see the old models again you need to logoff from the DB and login with the version context "current version". (last page login wizard) (Remark the versionig state of the models is read only).