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## API Updates for February 22, 2024

**API**

* Added the `date_last_imported` field to the [product](/developer/api-reference/rest/admin/catalog/products) model. The field format is a *nullable* *datetime string* (e.g., “2024-01-24T14:36:56+00:00”). The field is modifiable and filterable.

* We’re happy to announce that you can add a set of `query_parameters` to the [Create Cart Redirect URL](/developer/api-reference/rest/admin/management/carts/redirects/create-cart-redirect-url) when redirecting the shopper. For example, specifying `query_params =[“utm_source” => “mailchimp”]` in a request captures the `utm_source` parameter. When the shopper clicks on the redirect URL to proceed to the checkout page, the appended link will appear as `/checkout?utm_source=mailchimp`.

**Bug Fixes**

* Renamed the “Get All Metafields” reference titles to be more relevant to the resource type you want to retrieve and to prevent duplicate names across different [schemas](/developer/api-reference/about-our-apis).

* We’ve updated the [Creating Channels](/developer/docs/storefront/headless/channels) section of the Headless Guide to provide more clarity around the order of the steps in the channel creation process.

* The correct schema is now available for [Create a Refund](/developer/api-reference/rest/admin/management/order-operations/payment-actions/create-order-refund). Previous Request Body and Response Body examples displayed `reason` in the order level and items level.

* Added titles to [Catalog](/developer/api-reference/rest/admin/catalog) response schemas. These changes will make return types more readable for users using our docs to generate clients.

* Changed `primary_images` to `primary_image` for the include query parameter for the Category API’s  [Get All Products](/developer/api-reference/rest/admin/catalog/products) endpoint.