I have done data migration using data migration tool from magento 1.9.x to 2.2.4, but it doesn't import admin users as mentioned in the docs, and we need to manually copy the admin users.
What I have done is, I have simply copied the users from magento1DB.admin_user to magento2DB.admin_user table. I can see that users are now appearing in the Magento2 backend, but when I try to edit any admin user, it throws an exception.
Exception #0 (InvalidArgumentException): Unable to unserialize value
Also, I cannot login with the Magento1 admin user in Magento2 admin panel.
Couldn't find any help, does any one have an idea?