**List of steps to reproduce**:
* Create a Cargo table with however many columns.
* Create a template that does a #cargo_store into that table, but leave out one of the fields (//completely// leave it out - don't set it to a blank value)
* Use that template somewhere to perform a store into that table. You should now see the Cargo table contain one row.
* Edit that same page again (may be a null edit). The Cargo table should now have a duplicate entry.
**What happens?**:
If any fields are missing when performing a #cargo_store, duplicate rows will be added to the table when the storing page is edited.
**What should have happened instead?**:
#cargo_stores that are missing a field should not result in duplicate rows.
**Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc**:
MediaWiki 1.35.3, Cargo 2.8
This was discovered on [[ https://nookipedia.com/wiki/Special:Version | Nookipedia ]]. We were experiencing issues with duplicates on our [[ https://nookipedia.com/wiki/Special:CargoTables/nh_recipe | nh_recipe ]] table. This table has a `notes` column that we don't usually define when storing into the table. After adding an empty `notes` field to our Template:NHFurniture's `nh_recipe` #cargo_store ([[ https://nookipedia.com/w/index.php?title=Template:NHFurniture&diff=prev&oldid=618945 | diff ]]), we found that editing NH furniture pages no longer creates duplicates in the `nh_recipe` table.