Delink/Decouple AR Customers and AP Suppliers

Hi All,

Is there a way to stop, delink AR customers and AP suppliers.

Even though we have customers which are also setup as suppliers, we dont want each module to know about each other.

We are having issues with updating tax information on a supplier. The system keeps telling us the AR customer is using the tax information.
Our requirements are that the customer and supplier information are seperate, and the system shouldn't be checking AR customer tax info, if we are updating AP supplier tax info.

I've had a look through profile options etc, but can't seem to find anything.