There are two different ways that Mal's can send the order data back
to your website.  One way has a limited number of characters.  Here's
how to fix that so it doesn't happen again.  Login at www.mals-e.com
and then click "Cart Setup."  Next, under  "Advanced Settings" choose
"Remote Call (IPN)" link.  In the drop down box change it from GET to
POST.  POST is the option you want.  Now click "Update Record" and it
will save your changes.