These registration is correct.
SmHost.conf is loaded only when LLAWP startup, and HCO is loaded at WebAgent side.
After starting up LLAWP, Policy Servers are failed over and back as registration of HCO.
So, this seems to be product issue.
The workaround is added and matched SmHost.conf and HCO connection info as below.
1. Host Configuration Objects (in AdminUI)
Move to Infrastructure > Hosts > Host Configuration Objects > Clusters
Add clustering policy servers as following.
Add connecting policy server list as following.
#Add additional bootstrap policy servers here for fault tolerance.