PayPal Overwrites Custom Profile Address Info

I have an individidual membership signup with a set of profile fields called "Contact Information". The fields it asks for are home address, home city, home state, home zip, first name, last name.

I am using PayPal STANDARD for my payment of this membership.
I then go into PayPal and enter my credit card and billing info. If this info differs from the custom profile info I entered in CiviCRM, it should create a new location with this info. Instead the following occurs:

The home information I entered in my custom data fields on the membership sign up has been overwritten by the address info I gave to Paypal, yet a billing location has ALSO been created with only my email address is in there. CiviCRM should be putting all PayPal-related info (since it differs) into this billing location as opposed to overwriting my other intake.

Second, if I use a credit card that is under a different name from my own:
I enter all my personal information in the custom data fields and my record gets created in CiviCRM. Then I go to pay in PayPal with my credit card that is in someone else's name with their address. I give this pertinent info to PayPal. Now, back in CiviCRM my record is gone completely and instead the membership goes under the person whose name/address the credit card is in. Again I would think the payment information should create a new location under my contact information.