Hello,
I'm using the extension saguaros posted in https://www.joomlart.com/forums/d/44826-some-k2-items-not-migrated.
When migrating K2 items and extra fields, I'm finding the extra fields properly migrate to native Joomla fields. However, for K2 items that had multi-select fields, only a single option gets assigned to the field within each native Joomla article. Does anyone know how to fix this so multiple field options can be supported? I already tried editing the "Fields - List" Joomla plugin and enabling multiple before the migration.