Are you trying to ADD a PG to the system? Or remove it?
If all you're trying to do is take a PG off-line, you should be able to do that by simply shutting down the PG (both sides), and then editing the Callrouter component in ICM setup, to un-check the DMP box for that PG. You should be able to just do one side of the callrouter, and then the other.
What issue(s) are you having when trying? Are you getting an error?
Or is it that the PG is somehow still showing up in RTTest:status? That's what I inferred from your statement, but it's really un-clear.
Logically speaking as the Routers read the config from duplexed pair (based on updated config key) , If I start Side A immediately it reads the config changes from Side B of router thus overwriting the config changes(PG decoms) just made. So far we have been stopping Side B before bringing Side A up as it forces Router A to read the config from logger rather than getting from duplexed Router.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.