How to add back a previously deleted device + entities to the MQTT integration in HA?

Wondering, sf there a way to force Home Assistant to add back devices in the MQTT Integration that have been deleted?

I’m using the MQTT integration in Home Assistant (via Mosquito broker).
I deleted one Awtrix 3 (that was having issues after I renamed it) and tried to add it back. It shows up in MQTT Explorer but HA can’t control it. I read online to try deleting the Awtrix(s) and uninstall MQTT integration and Mosquito, and then reinstall everything but now both Awtrixs aren’t working. I tried going into the .storage/core.devices_registry and adding the devices back there and also the entity registry. The problem is with the entity registry, I don’t have the proper names for each entity to manually add all of them back.

Anyone know how to fix this issue? Seems like Mosquito Broker and MQTT are not fully uninstalling. Is there a file where that I can edit to allow for a truly fresh install of Mosquito Broker + MQTT?

Thanks!

Where?

In the homeassistant discovery topic?