Campaign Audience doesn't save coupon information

1. Create a Campaign Audience and use a coupon condition;
2. Create a Campaign Promotion associated to this Campaign Audience;
3. Buy a product that has this promotion applied;
4. Check on the OMS this order;
5. Review the OrderForm from the order, the coupon is not saved in the marketingData Field

There is no workaround. If possible, the customer can use the coupon condition on the Promotion if it is an option.