Update published_at on a product is not working if Variants has a Metafield (REST API)

[LarsB]

Hi

I need to update the published_at via the REST endpoint.

If I call the endpoint with Metafield in the Variant section, it doesn't update the published_at. If I remove the Metafield it works fine. Is this a bug in the endpoint or any ideas?

With Metafield:

{
    "product": {
        "body_html": "<ul><li>Sized to fit the twist-on...</li></ul>",
        "id": "123456789",
        "metafields": [
            {
                "description": "",
                "id": "22336917608621",
                "key": "LENGTH",
                "namespace": "global",
                "type": "single_line_text_field",
                "value": "4"
            }
        ],
        "options": [
            {
                "name": "Finish"
            }
        ],
        "published_at": null,
        "published_scope": "global",
        "tags": "Trucks,Wheels",
        "title": "Spike Nut...",
        "variants": [
            {
                "barcode": "",
                "fulfillment_service": "manual",
                "grams": "0.00",
                "inventory_management": "shopify",
                "inventory_policy": "deny",
                "metafields": [
                    {
                        "description": "",
                        "key": "finish",
                        "namespace": "custom",
                        "type": "single_line_text_field",
                        "value": "Chrome"
                    }
                ],
                "option1": "Chrome",
                "product_id": "123456789",
                "requires_shipping": true,
                "taxable": true,
                "weight": "3.00",
                "weight_unit": "lb"
            },
            {
                "barcode": "",
                "fulfillment_service": "manual",
                "grams": "0.00",
                "inventory_management": "shopify",
                "inventory_policy": "deny",
                "metafields": [
                    {
                        "description": "",
                        "key": "finish",
                        "namespace": "custom",
                        "type": "single_line_text_field",
                        "value": "Black"
                    }
                ],
                "option1": "Black",
                "product_id": "123456789",
                "requires_shipping": true,
                "taxable": true,
                "weight": "2.00",
                "weight_unit": "lb"
            }
        ]
    }
}

Without Metafield:

{
    "product": {
        "body_html": "<ul><li>Sized to fit the twist-on...</li></ul>",
        "id": "123456789",
        "metafields": [
            {
                "description": "",
                "id": "22336917608621",
                "key": "LENGTH",
                "namespace": "global",
                "type": "single_line_text_field",
                "value": "4"
            }
        ],
        "options": [
            {
                "name": "Finish"
            }
        ],
        "published_at": null,
        "published_scope": "global",
        "tags": "Trucks,Wheels",
        "title": "Spike Nut...",
        "variants": [
            {
                "barcode": "",
                "fulfillment_service": "manual",
                "grams": "0.00",
                "inventory_management": "shopify",
                "inventory_policy": "deny",
                "option1": "Chrome",
                "product_id": "123456789",
                "requires_shipping": true,
                "taxable": true,
                "weight": "3.00",
                "weight_unit": "lb"
            },
            {
                "barcode": "",
                "fulfillment_service": "manual",
                "grams": "0.00",
                "inventory_management": "shopify",
                "inventory_policy": "deny",
                "option1": "Black",
                "product_id": "123456789",
                "requires_shipping": true,
                "taxable": true,
                "weight": "2.00",
                "weight_unit": "lb"
            }
        ]
    }
}