Interfaces showing up twice under device, one has a "new name" and one doesn't

Hi, I'm having a weird problem where some tunnel interfaces are showing up twice in the list under "All Devices -> Interface View tab".

If I click on the edit symbol next to the tunnel interfaces, they both say "Tunnel16" under Interface ID for example, but in the list, one has a description or "new name" and the other one just says Tunnel16. The traffic amounts being reported for both Tunnel16 interfaces are different too so obviously there is a problem.

I have had snmp ifindex persist enabled for a while now.

Is there a device and or interface cache inside manageengine that needs to be cleared out? I couldn't find an option. Seems like some of the data is old/stale and needs to be removed.

I tried to unmanage, and delete the interfaces as well as delete the router itself but the duplicates just come back with the same "new name" or description right away. Seems like deleting the interfaces or device doesn't remove all the data about it.

I am running 8.5 build 8500.

thanks for any suggestions
Richard