Django loaddata ignore existing objects
If you keep pk in the json like that, you will always overwrite the first two records in product.productprice.
I would use "pk: null".This way, you will always create new record with every load.
So if you want to create a new price:
[ { "fields": { "currency": 1, "price": "99.99", "product_variant": 1 }, "model": "products.productprice", "pk": 1 }, { "fields": { "currency": 2, "price": "139.99", "product_variant": 1 }, "model": "products.productprice", "pk": 2 }, { "fields": { "currency": 4, "price": "9.99", "product_variant": 1 }, "model": "products.productprice", "pk": null }]The first two records are always be the same, but if you already added a third one ( pk:3 ) with the last section you will create a new productprice with pk: 4.
BTW: if your currency field is an other primary key(with autoincrement), you can put "null" there too, a new primary key will be generated.