> For the complete documentation index, see [llms.txt](https://docs.horysmall.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.horysmall.com/report/introducing-the-gen3-aix-extension-for-the-nodek-program/update-checkout-and-invoice-cost-breakdown-for-gen3-aix-extensions.md).

# Update: Checkout & Invoice Cost Breakdown for Gen3 AiX Extensions

This change introduces a more detailed cost breakdown in the migration cart and on all invoices.

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### 1. Checkout Flow Change

* **Before**: The migration cart grouped the "extension cost" and "shipping cost" together under a single "**Shipping Cost**" line item.
* **After**: The cart now bifurcates (separates) these. Customers will see two distinct line items:
* Extension Cost
* Shipping Cost

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### 2. Impact on Invoicing

* **New Orders**: Any order placed after this release will automatically generate an invoice that reflects this new, separate cost breakdown.
* **Existing Orders**: Invoices for all existing orders are available.They can be downloaded from the order details page and will also show the correct, bifurcated cost breakdown.