I wanted to do a production migration, which i have been putting off for a while now, and this test cases as requested by @stephdl seemed like a wonderful test case to add to the migration, so yes its a production migration, because it has real use data.
is mail server not supposed to be fully functioning and working for this migration test case?
I can attempt the simplified test case as well, let me deploy a test NS7 server tonight and test the migration, i already have a NS8 test server the one i use to test module development