When using the tool over VPN with an unstable connection, it would be good to have an option to keep trying the connection more frequently in the next 30 seconds. In my experience, after getting the Lost Connection error, once I click the retry, the migration continues right away. It is a waste of time waiting for 1 minute or more where after a second the connection is back and stable again for some time. This is specially useful for migrating large amount of files. The time to retry increases as well so would not be really efficient.