Investment report logic?

When I call up a report on investment transactions, restricting it to a certain security, it seems the report is incorrect. Simplifying, I show:

date action quote shares cash amt.inv. cash+inv.

5/16 bought 4.6 700 -3233 3233 5/17 bought 4.6 800 -3694 3694 5/25 bought 4 1000 -4015 4015 9/11 sold .5 -2500 10942 -10942 Realize gain -9720 0 -9720 Totals -9720 0 -9720

Quicken is telling me that when I buy shares I debit the cash balance and credit the amount invested balance. Fine.

But the fourth entry, a sale, increases my cash balance by 10492 rather than 1250 (2500 shares X .50/share), and debits the amount invested the same (incorrect) amount.

As I see it, I spent about 10942 buying the shares and got back

1250 selling, for a loss of 9692. So when you figure in commissions, which I don't show here, Q has the final result about right. But how it gets there I have no idea.

Thanks, p.