Describe the issue

When a customer's address is updated and the corresponding Sell-to address on the contract is updated to match, the Ship-To field remains set to Default (Sell-to). Despite this, when an invoice is created from the contract, the old customer address is used as the ship-to address instead of the newly updated one.

Expected behavior

When Ship-To is set to Default (Sell-to) on a contract, the ship-to address on the generated invoice should always reflect the current Sell-to address on the contract — not a previously cached or overridden value.

Steps to reproduce

1. Create a customer contract for any customer with at least one line item.
2. Update the customer's address (e.g. change street from Petuelring 130 to Petuelring 111).
3. Update the Sell-to Address on the contract to match the new address.
4. Leave the Ship-To field on the contract as Default (Sell-to) — do not change it.
5. Create an invoice from the contract.
   • ❌ The invoice is generated with the old customer address as the ship-to address.

Additional context

No response

I will provide a fix for a bug

• I will provide a fix for a bug