How to correctly dispose of a Device Registration

[dylangerdaly]

So I accidentally went thru the process of uninstalling microG assuming apps would re-register with a new Device Registration, I was able to recover by restoring an old backup I had of microG's data.

When upgrading devices how should users correctly disable/dispose of their old Device Registrations without having been signed into a Google Account.

I assume if I were to move phones, wipe the old one, Google would still be delivering Push Notifications to apps on a non-existent device.

[ale5000-git]

If you have root you can run this command:
find /data/data/*/shared_prefs -name 'com.google.android.gms.*.xml' -delete

It will delete the gms data from all apps causing them to re-register (other app data are left intact).

[dylangerdaly]

Oooo neat, thank you!

Wish this was a Settings App function.

Is there a way to signal to Google to stop using/invalidate the specific Device ID/Device Registration?