Is there a way to get "unspecified" contacts in Marketing Cloud - e.g. orphaned contact from setContactKey in mobilePush - in order to mass delete them from Automation Studio?
I tried to get contacts by SQL Query from _PushAddress, but it returns active contacts only from mobilePush.
Thanks for your help! :)
edit : I tried to create List from mobilePush -> Manage button -> go to List tab -> create List , and shown like this: