An image processing apparatus performs export by switching, based on the communication type of one or more pieces of stored destination information of an external apparatus, whether or not to add an external line call number to a destination number included in the destination information. The image processing apparatus also performs, with respect to destination information obtained from the external apparatus, import of the destination information to the image processing apparatus by switching, based on a communication type regarding the destination information, whether or not to remove an external line call number from a destination number included in the destination information.