Foreman maintain should not allow upgrading from least minor version to next major version for e.g: Currently foreman-maintain allows satellite upgrade from 6.2.1 to directly 6.3.0 which may lead to missing migration in the satellite. Instead for upgrading directly to 6.3, It should follow the path Satellite 6.2.x -> "6.2 latest" and then Satellite "6.2 latest" -> 6.3
*** This bug has been marked as a duplicate of bug 1526748 ***