Cloning: Labels are not updated

If a rule is cloned and the event is changed, the default labels of conditions and actions may not be correct.
Example:
1) Add a new triggered rule, event "After saving new content"
2) Add an action "Publish content"
3) Clone this rule and change the event to "After updating existing content"
4) The action has the wrong label "Publish created content", it should be "Publish updated content"

A solution would be to call a label update function for a new cloned rule.