Use of LogisticsEntityPostalAddressFormHandler and DirPartyPostalAddressFormHandler

Hi Guys,

I need to customize a sales transaction, two types of address should be attached to the sales orders. I saw some sample codes that uses these two classes to handle the addresses. On salesTable.deliveryPostalAddress, it uses the class DirPartyPostalAddressFormHandler, given that the address is attached to the custTable.party. The address that I'm going to use is not attached to custTable, but will be attached to the sales transactions. I read the white paper for the Address framework, and it states there that for transactions the DirPartyPostalAddressFormHandler should be used. But Looking on the class, they are attached to party fields.

In my situation - two addresses on the sales order, which class should i use?

Thanks.