Investors & landlords

I click "I'll enter one sale at a time"

Sales price = $40,000

Cost = $39,000

Sales category = Box D

Click "continue"

Accrued market discount = $1000

Click "done"

Click "continue"

This page shows that my gross proceeds were $40,000

Click "done"

Now, the summary of sales page appears sowing that my Net Gain/Loss is 0.

 

It should be a gain of $1000, correct?  The broker confirmed that it should be $1000.  What did I do wrong?