Vendor with Different Vendor Sites with Same address and contact information

We are importing vendor sites via AP Supplier sites interface table.

We have multiple vendor sites with same address, each site might belong to different operating unit or different payment terms etc.when we are importing data using interface import  program, it is creating one address id(location id) and party_site_id for all those vendor site codes.

And we have different contacts for each vendor site code. Since we have one address id all the contacts are attached to that address id.

Is this the standard functionality?  Is there a way that we can get the separate location/address id for each address?