Please leave parent untouched when in update mode AND parent is not set in the CSV file. <bountysource-plugin> --- Want to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/4192893-parent-is-0-when-not-set-on-update?utm_campaign=plugin&utm_content=tracker%2F1511225&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F1511225&utm_medium=issues&utm_source=github). </bountysource-plugin>