Initial situation: Below the "motor" class, the "spacer" subclass was removed using Remove class [Remove Class]. The change was then committed.
After the commit the class is not displayed anymore. Now the class shall be restored again.
Click on the context menu command Restore removed classes on the parent class.
Select the corresponding event and confirm with .
-> The removed class is displayed again.
Upload the change to the classification server [Commit catalog changes to classification server] using Upload catalog changes to classification server (commit) [Commit catalog changes to classification server].