PayPal Single Payments Gateway via Membership

Barry -

We have 2 registration forms :

1. Long registration form (with additional fields added by the Custom Fields plugin)
2. Short registration form (by Profile Builder plugin).

Long Registratipn form ( ?page_id=241) integrates with paypap single payments gateway. After short registration we also need the user to use paypal in same manner ( we are redirecting to Long Registration Form (?page_id=241) currently after "short registration" - the registration form is displayed rather than the Paypal Membership Selections)

Is there any way we can use paypal of ?page_id=241 directly? What do I need to do in order to do so?

Thank you!

Jeff