Answered my own question. Had to rerun a few prep steps using Deploy.exe then was able to create a new P-Chat pool on SfB 2019 in Topology Builder. After publishing the topology I was able to install PersistentChatUpdateInstaller.exe which installs an MGCServer update, and now I have SfB 2019 Persistent Chat in installed programs list. Now to migrate data off of SfB 2015! 🌇
Updated Mar 03, 2025
Version 2.0