Migrating to a new marketing automation platform (MAP) is like moving into a new house. You have to itemize everything that’s moving with you, pack up all your data, and say goodbye to the way it was before. Forever. And it doesn’t end after you’ve shifted - you’re going to have to spend some time living out of boxes, gradually unpacking, and realizing you’d like to organize things a little differently as you go.
That having been said, most marketers consider platform migration a big headache.