PCNS Client Removal from NMC is not working

[stanj]

I have PCNS v5 installed on two ESXi servers.

We have 2 APC UPS , called UPS3 and UPS4

Our first setup was redundant - split the ESXi Servers pwr supplies of each host to two of the UPS.

I configured each PCNS for this setup.

After checking the battery power on each UPS, we decided to go to a single UPS (UPS4)  or both ESXi Servers 

I deleted the PCNS VMs and redeployed them to both host..

When i login to each the PCNS VM console, I did not get the menu for setup.

It went straight to the login prompt...

I logged into PCNS Web Interface (port 6547) for each ESXi and went though the PowerChute Setup to add UPS4.

However, when I login to NMC for UPS3 and go to Configuration /  "PowerChute Clients", I see PCNS Client still registered for one of the ESXi Servers..

If I select the IP and "Delete Client"., it disappears from the list.

But, when I logout of the NMC for UPS3 and log back in, the IP is listed again?

How can I remove PCNS from UPS3 permanently since both ESXi servers are on UPS4 ?

thanks