following the document for migration .... but in our case all user identities are maintained in Azure active directory and Azure ADDS(no on-premise AD is used).... so can i ignore the status of users in identityMap.csv file and go ahead with migration? will this impact post import
It's important that you review the generated mapping file for completeness and correctness.
It says in the document that once imported as a historical identity, there is no way to move that identity to become active. And Historical Identities do NOT have access to an organization after migration, do NOT have a licenses, and do NOT show up as a user in the organization.
So you'd better check the status of users in identityMap.csv file, especially those status are historical to make sure users' status are all correct.