I've gone through that already, and I'm looking through some logs currently while doing additional testing. WAM is running on both servers (reference ticket 6067 on your end). If I move the client machine over to the secondary site and do a gpupdate /refresh it reports in fairly quickly. If I move it back, nothing. Assuming if I move all the clients over by changing the GPO to the other server they would show as reporting. Might do that just to test.
I am seeing this in the logs right now, unknown if it is related-
2023/11/29 07:48:44.9180990 6480 9088 Handler FAILED [80070032] Method failed [AppxPackage::Initialize:232]
2023/11/29 07:48:44.9181023 6480 9088 Handler FAILED [80070032] Method failed [AppxApplicabilityData::Initialize:549]
2023/11/29 07:48:44.9181572 6480 9088 EEHandler FAILED [80070032] EvaluateManifestBasedRule failed for update CD3CC444-9813-4CB4-8E18-322237524541.1, idExpr=57
2023/11/29 07:48:44.9181609 6480 9088 Agent FAILED [80070032] Evaluate Installed rule, updateId = {{CD3CC444-9813-4CB4-8E18-322237524541}.1}
2023/11/29 07:48:44.9193556 6480 9088 Handler FAILED [80070032] Method failed [AppxPackage::Initialize:232]
2023/11/29 07:48:44.9193587 6480 9088 Handler FAILED [80070032] Method failed [AppxApplicabilityData::Initialize:549]
2023/11/29 07:48:44.9194183 6480 9088 EEHandler FAILED [80070032] EvaluateManifestBasedRule failed for update CD3CC444-9813-4CB4-8E18-322237524541.1, idExpr=56
2023/11/29 07:48:44.9194235 6480 9088 Agent FAILED [80070032] Evaluate Installable rule, updateId = {{CD3CC444-9813-4CB4-8E18-322237524541}.1}
Doing additional testing still.