@NacNick you are doing pretty much what we are about to start on. We are upgrading from SAS 9.4M2 on Windows Server 2012 R2 to SAS9.4M8 on Windows Server 2022 on new servers. This has to be a fresh install and our expectation is that both installations will continue to run in parallel while we migrate all our applications and test that we get the same results. Do NOT skip this step!
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.