Minor versions are now supported when doing a migration. Minor versions with title changes are also being migrated correctly as well.
To migrate minor versions now follows that same process as migrating major versions. To get the minor versions, make sure the option for "All Versions" and "All Documents" are selected in the source data definition.\
This is a hotfix build of 6.6.1 as well as 6.7. Please contact support to obtain the installation files.