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.