In this example, I would like to start off by saying, the aMember migration from version 3 to version 4 went perfectly. aMember 4 is showing all the payments, and even went through the trouble of revalidating the validity of all payments, creating the products, and assigning users to the products. The problem is this >> IPN Url changed and PayPal is saying there fix is to force everyone to re-sign up again. I have tried forcing the path change by using .htaccess and a redirect. The IPN URL was also updated within the PayPal account, however -- FAIL. When grabbing IPN data for resubmission (visible in IPN history) ---- FAIL. Redirect 301 /am/plugins/payment/paypal_r/ipn.php /members/payment/paypal/ipn Fails Kind of at a loss here, and this is something that desperately needs a solution. Could you please provide mod_rewrite code so the URL post to the old address will post to the new script internally.