Possible to have "end" date before "start" date in status tab

Hey Andy,

I know you've made RGP pretty fool-proof in a few spots, but I found a better fool: me!

RGP correctly set a start date for a freeze as 1/1/2012, and then I set a custom end date (accidentally) as 1/31/2011. When this happened, the customer did not change to freeze status and was thus billed the full amount of normal dues.

So I don't know if you'd call it a bug or what, since they didn't switch to freeze status even though the start date was set correctly. I can't see it happening very often in the future, but would it be possible to add a warning (dialog box, red text for the date, can't hit ok, etc) that a customer has a status end date before the start date?

Thanks!
John