Hi Rob,
Yes, I opened a support case earlier today but I've received quicker replies here. We have 8.2.3.1 AMPs, and while I saw in the release notes that SSO will not work correctly between Glass 1.0.2 and AMP 8.2.3.1, and a general recommendation to use 8.2.4 with Glass 1.0.2, I have not yet upgraded our AMP systems.
Also, Glass 1.0.2 gets stuck in a loop at the inital web login. I've never even had a chance to configure the managed AMPs etc. AMP version isn't even a variable at this point.