IAM server upgrades 2016 - 2022

Hey guys,

We are planning server upgrades from 2016 to 2022 in the coming weeks.
The IAM servers are on the list to be upgraded, just want to get any input from you guys on thoughts/concerns around this.
1IM 9.0 LTS supports Server 2022, so I don't think there should be any issues, but keen to hear from community experts.
Do we possess any documentation detailing the pre-check procedures or the steps to be followed during and after a server upgrade?
The loose plan is to do test and dev first, and then move onto prod once we have tested and confirmed everything is working as expected.