When agents service large or repeat order customers, it is not unusual for principals to wish to take these customers “in-house” and remove the agent’s involvement, such that the principal no longer has to pay commissions to the agent for sales made to those customers.  You may, therefore, wish to resist any attempt by your principal to take customers in-house or to cease the payment of commissions to you in relation to sales made to those customers.  Alternatively, you may wish to negotiate a settlement with your principal which compensates you for the loss of future commissions which you would have received from future sales to those customers.