Advanced Payment Term using Installments and Workday Calendar

I need to set up a Payment Term for 8 installments, each due the last day of the month.

What I expect to see:

Expensed in December

Due dates:

12/31/18

1/31/19

2/28/19

3/31/19

4/30/19

5/31/19

Etc…..

I set up a new payment term (ZL1) with 8 installments and used a new due date Rule (V30N)

Due Date Rule V30N

Based on date = 1

days to add = 30

Calendar = 957

Work Day Rule = 3

Work Day Calendar 957 is set up for every month from 11/2018 thru 12/2019.  Each Work Day Calendar has each day set to E except for the very last day of the month is set to W.

I create a new voucher with 12/1/18 invoice date and Payment terms = ZL1.  The voucher splits into 8 installments but they are all due 12/31/18.