Unfortunately, the desired by you behavior of RadDocking
is currently not supported out of the box - you could not drag a Pane from one RadDocking
and place it inside another.
However, we have this logged as a feature request in our Feedback portal. On the following link you could vote for the item and follow its status:
If you have any additional questions or concerns regarding Telerik controls, please do not hesitate to contact us.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items