Clear ghost restore object and sessions

Hello everyone,

I have a lot of objects in my restore tab that are no longer backed up. They are displayed with no files and directories to restore, no devices, no media but are Always here. They also are not in the clients objects.

How can I delete them ?

And I have the same problem in my Internal Database where I have a lot of sessions of 2008 or 2010 with no media anymore since a long time.

I know that I can delete them with a right click and remove but is there a more efficient solution ?

thanks for your help,