OVSDB southbound operational MDSAL stops getting populated after ovs-vsctl del-manager

After the following sequence of operations is followed, the OVSDB southbound MDSAL stops working.

1. configure an OVS host to have a manager of: ovs-vsctl set-manager ptcp:6640
2. use the OVSDB SB MDSAL to connect to the OVS host via a POST command

• MDSAL config and MDSAL operational look good after this step.
  3. on the OVS host, delete the manager: ovs-vsctl del-manager
• MDSAL config looks ok (still set as in set #2)
• MDSAL operational looks ok - it's cleared out since the OVS host is 'gone'
  4. Delete the OVSDB SB MDSAL config node for the OVS host with a DELETE command
• MDSAL config looks ok (cleared out)
  5. on the OVS host, set the manager again: ovs-vsctl set-manager ptctp:6640
  6. (step #2) - connect to OVS host via a POST command
• MDSAL config looks ok
• MDSAL operational is not populated
• OVS host does not show up as connected (ovs-vsct show)

After this point, the SB operational MDSAL is no longer getting populated. Attempting to connect to a different OVS host (e.g. step #2) also does not work.