Remove old devices from OZW beta integration?

I wanna start over, clean slate.

Deleted OZW beta integration and supervisor add on. Reset AEOTEC stick back to default. Reinstalled intgreation and supervisor add on.

Integration still shows 53 devices. Supervisor add on shows 2 nodes (which is correct. The stick and then I added one switch). How do I reset integration back to 0

Go to integrations and delete all entities there. (might need to delete integration on forehand).