HCP is so finicky… I had to rebuild so much.
I would have never found this fix if my Windows 10 machine didn’t die.
Best advise I can offer anyone is get a Mac, and have it produce ALL your apps AND your web server. If not, no matter how much environment variables you set for cordova id caching - it won’t matter. The appId is completely different. So build all from one machine. That will be your problem free build machine.
ENJOY A massive sense of relief man…
Thanks to all who helped!