We report to the credit bureau on all consumer loans, and we report on guarantors on one of our commercial products - the account agreement states that we do report on this product. We'd like to discontinue reporting on those guarantors. To stop this reporting, other than changing our agreement, do we need to send notice to the existing guarantors that we are stopping? (The thought was that it has helped the credit scores of the guarantors in the past, so by discontinuing there may be a negative impact to their credit score.)