How did the migration go when everything went well?

Please accept my apologies, but...I have found the installation of IAS 3.14.x on Windows 2016 is not the right place. After the migration, I want to upgrade to Centos.

Migration using DMT went well (needed to run it three times to migrate all users and digipass), but upgrading on Centos or IAS upgrade.sh gave me a headache. Upgrade to 3.15 goes smoothly, server is not in migration mode, started up fine after the upgrade.

Any clues what to complete and where when migration did go well?

I don't know if this is the right place, but...I have test installation of IAS 3.14.xx on Windows 2016. I wanna migrate it to Centos 7 and then upgrade it to 3.21

Migration using DMT goes well (need to run it 3 times in order to migrate all users and digipass), but upgrade on Centos or IAS upgrade.sh is giving me headaches.Upgrade to 3.15 goes smoothly, server is not in migration mode, stared ok after upgrade all well.