Hi Jeremiah,
Glad that you had a successful migration!
Yes, this is normal; see the migration guide, here: https://updraftplus.com/faqs/how-do-i-migrate-to-a-new-site-location/
Relevant section:
If you do return to the WordPress dashboard, then don’t be surprised if you have to log in again – having replaced your site database (including the users), WordPress will need you to re-identify yourself, using valid login details from the imported database (i.e. the site that the backups are from):
Login credentials are part of the WordPress database; so, restoring a remote database replaces the users (including their internal IDs, which are linked to all other content and various other things across the database).
David