Stocks sales in Retirement Accounts

[Quark Z.]

Hi,

I'm am getting the hang of splitting up stock sales.  However, in a 
retirement account it is a little different because you don't track 
capital gains & losses the same.  I'm trying to enter a sale at a loss.  
I have the following.

The Sell side is easy:
Gross sale = $500
Loss on sale = $60

The buy side is where I'm stuck:
Assets:Retirement = $493
Expense:Commission = $7
Loss = $60

My question is where do I post the Loss to?  It's not an Expense:Capital 
Loss is it?

Thanks for the help!

Lou