Discount on an invoice with USE tax

Here is the scenario (oracle release 11.5.10):

 

1. Created an invoice with a USE tax with a 2% discount if paid within 10 days.  Invoice amount = 100

2. The discountable amount on the invoice header equals the item amount

3. matched the invoice to the PO and calculated tax

    - an invoice distribution for 100 was created for the item

    - an invoice distribution was created for the use tax

    - an invoice distribution was created for the offset tax

4. the payment schedule shows the discount would be 2 (100 * .02)

5. validated and created accounting

    --- up to this point, everything seems OK

6. created a payment batch

7. When I go view accounting for this payment batch, I see an entry for the discount of the item AND entries for the offset and use tax