Post date of recur not respected in credit card pledge payment

Steps to reproduce -

1. Create a pledge for a contact.
2. For payment - click Credit Card Payment link.
3. Select processor as Authorize.Net. Check is_recur to 1.
4. Modify the start date value to some date in next month -> Save.

Notice that the paid date of the pledge and receive date for contribution gets recorded as the current date and not the post dated value selected above.