Coupon combined with Cart Price Rule results in an order total that is too low.

[pdt256]

Cart Line Items:

• Product A $25.00 17.50 * 30% catalog promotion
• Product B $4.00

With only Cart Price Rule and Catalog Promotion:

• Subtotal: $21.50
• Discounts: ($4.00)
  • Free Item (Buy A get B free)
• Total: $17.50

With 20% OFF Coupon Added:

• Subtotal: $21.50
• Discounts: ($8.30)
  • Free Item (Buy A get B free)
  • 20% OFF First Order
• Total: $13.20

Total should be $14.00 (17.50 * 0.8) if applying the 20% Coupon to the final total.

[pdt256]

Should the Coupon even be added to an item with an existing Catalog Promotion?

Maybe this could be an option for Coupons similar to: canCombineWithOtherCoupons?

Maybe canCombineWithCatalogPromotions?