Your options:
1. Update the older types with no Trader Teleports from the World. That will require assistance if you are not familiar with the process. There is a requests and discussion channel in this forum.
2. Start a new World with them removed from the appropriate POI Prefabs folder.
Either way, it will help to test that the new versions allow the kick out feature to work when it's restored. As for the Rad Cats POI... that's a special case since it has the NPCs.
Using the Rad Cats POI during a Horde Night will effectively kill off all of those NPCs and trash it rendering it toothless. Using it as a one off place for the night or extended nights, is what it is and some Server Admin allow it while others do not. They are pretty rare and luck plays a part but it really depends on your own rule set.