Migrate device from one hosted account to another

I have a device that I dont have direct access to that we wish to move from one hosted mender account to another. This i believe will require updating the TennantToken in the mender.conf which would be easy to do if I had ssh access but I dont so I am wondering if it is possible to do this via deployments. I have seen the threads on migrating servers but they involved setting up multiple servers , you do not appear to be able to setup multiple TennantTokens. Is there a way to move a device to a new account without ssh access to it ?