OrderID not Unique

Putting a checkout system through its paces, and I noticed if I place more than one order in the same session, the order replaces the previous one using the same OrderID. If I place an order, logout, and log back in, it operates correctly using a new OrderID rather than the previous one.

Not sure where the problem is, can anyone offer a troubleshooting path?

on the success page, you should unset the order ID session variable.

look at the code to display the order ID on the success page.

This should be using a session variable, add code at the end of the success page to unset that session variable

On my confirm.php page I'm finding this:

$WA_sessionName = "eCartMGP_OrderID";

So I'm guessing the "eCartMGP_OrderID" is what I need to unset. Am I supposed to use the "Clear Session Values" function? When I do, I see a UserID, but no OrderID. Any help would be appreciated. This is the only thing holding up the cart from going live! Here's the only code on the checkout_success.php page:

<?php
//WA eCart Include
require_once("WA_eCart/eCartMGP_PHP.php");
?>
<?php require_once( "webassist/security_assist/helper_php.php" );
?>
<?php
// WA eCart Trigger Clear Cart
if ("" == "") {
$eCartMGP->ClearCart();
$Redirect_redirStr="";
if ($Redirect_redirStr != "") {
$eCartMGP->redirStr = $Redirect_redirStr;
}
$eCartMGP->cartAction = "ClearCart";
}
?>
<?php
$eCartMGP->GetContent();
?>

use the following code at the end of the success page:

<?php if(isset($_SESSION['eCartMGP_OrderID'])) unset($_SESSION['eCartMGP_OrderID']); ?>

That did it. Thanks!