Invoicing out only on specific Address Book Search Types

Hello,

We have a business requirement where we need to create contract billing invoices based on a certain address book search type.  

We have Job Masters and contract masters linked together and we are finding that if the users put in a JOB SITE address book record ( J is the search type)  in the  " Owner Receiveable " field(AN8O)  in the job master , then this AB record is getting invoice out .

Is there a way in contract billing to prevent this and only allow certain address book search types to be invoiced out ?

Thoughts?

Thanks