Please enable sysops to grant transwiki-rights, and bureaucrats to remove them on Norwegian (nynorsk) Wikipedia (nnwiki).
The changes in InitaliseSettings.php should be to add 'transwiki' for sysop in wgAddGroups and to add 'transwiki' for bureucrat in wgRemoveGroups.
Also make an entry for import sources (modelled after nowiki)
'nnwiki' => [ 's:no', 'q', 'no', 'da', 'sv', 'nl', 'en', 'de' ],