I had success migrating some mailboxes from G Suite to MailEnable by logging in to actual mailbox and using Options->Advanced->Import menu. From that menu I could enter Server, Port and check SSL.
However, I can't seem to migrate any mailbox by using MailEnable Migration Centre. Not only I can't specify Server, Port or SSL, I have no control of the progress. In Monitor tab it shows that migration failed for some mailboxes due to wrong username/password but I can't stop it by pressing Cancel Mailbox. It still shows up again after a minute or so with status In Progress (IMAP). Is this a bug?
What's the best way to migrate mailboxes without interacting with users?