The ATD Master Trainer program differs from the CPLP certification in that the program offers a designation, and focuses on one area of expertise. In addition, once you have earned your Master Trainer designation, it does not need to be renewed. The CPLP certification focuses on 10 areas of expertise, and is required to be renewed every three years.
If you wish to complete your CPLP certification after completing the ATD Master Trainer program, you are able to use your designation to test out of this content.