Maybe this is helpful:
https://systemcenternoise.wordpress.com/2019/04/08/scsm-2019-migration-or-upgrade/
A side-by-side migration of SCSM is pretty straight forward.
- Install the new SCSM environment
- Configure the SCSM basics -> SCSM console -> Administration ->Settings
- Configure the SCSM Connectors
- Install 3rd party extensions and configure
Based on the current SCSM environment:
- Decide which customisations you want to migrate in the new SCSM environment
- Verify if your current customisations are compatible with the new SCSM version. (https://techcommunity.microsoft.com/t5/system-center-blog/scsm-2016-8211-upgrade-steps-for-custom-development/ba-p/351583)
- Export unsealed MPs
- Verify all sealed MPs are available as *.mp or *.mpb file
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten