When I try to migrate multiple people it prompts me for the Notes password login every time it switches users.
This usually happens because a line is missing from the notes.ini file:
Add this line to the end of your notes.ini file, then add a carriage return to the ini file. Save and close.
If this entry exists in the Notes.ini file, confirm it is not the last entry in the file. There's an old Notes bug which prevents the last line from being read, and registering the dll in the extension manager.
To fix this, add a carriage return to the Notes.ini file, save and close the file, restart the migration worker, and test the migration to this worker.
Alternately, you could set Notes not to require a password from foreign applications:
Open your Notes client
Click on File --> User --> User Security
Check 'Don't prompt for a password from other Notes-based programs (reduces security)
Note** You must leave your Notes client open during the migration for this this to take affect