Wrong invalidated discount when creating return with off 20% mens shoes promotion

Description

• Precondition: Promotion off 20% men's shoes

Steps to reproduce:

1. Add to a cart:
   1 Puma Red (SKU-44477844, unit price 52.50, discounted price 42)
   2 Faded Glory Mens Canvas Twin Gore Slip-On Shoe (SKU-36127195, unit price 14.50, discounted price 11.60)
2. Place and complete the order.
3. Create the first return - 1 puma red.
4. Create the second return - 1 Faded Glory Mens Canvas -> invalidated discount is 2.90, return total is 11.60.
5. Create the third return - 1 Faded Glory Mens Canvas -> Observe the invalidated discount and return total.

Expected:
Invalidated discount and return total of 3rd return should be 2.90 and 11.60.

Actual:
Invalidated discount and return total of 3rd return is 5.80 and 8.70.

• Note: Issue does not happen if you place an order with only 2 Faded Glory Mens Canvas shoes