Renaming devices after switching phones

I’ve just changed to a new iphone and because I name my devices (old habit), I want to swap them around so the entity names remain the same. This worked fine (after deleting the old device from the companion app integration) and now my entities are all working again, but the device tracker stays as ‘unknown’, and the last location is from a couple of days ago. Is there any way to get this working again?

edit: it seems to have started working now, maybe turning location off and on again in the app settings did it?