Disconnect Suppliers from TCA

Hi,

We would like to 'disconnect' AP suppliers from AR customers in the TCA.

Basically, we don't link AR and AP parties, and won't in the future.
At the moment, when updating AP suppliers, we often get issues where an AR party has the same tax registration number, therefore we can't assign the TRN to a different AP supplier.

I know there is patch/profile for this to happen, just haven't been able to locate it. Any assistance would be appreciated.

Cheers,

Russell H