Hi Karl,
alright. That means the following steps should work:
Activate Wato Config on the slave site if this was disabled from the master
Login to the slave site and create a new cmkadmin
Disable Livestatus with omd config
Disable or delete the slave site on the master in the distributed monitoring section
Site should be useable standalone
I am going to try this in 2 months. I can keep you posted if this works.
Regards
Tobias