Does microwaving a baked potato remove the fiber and nutrients?
No. The only difference between the primary types of cooking; Convention, Convection, and Microwave is in how the energy is delivered. Microwave heats due to friction with the water molecules, which then heats the food and has no effect on flavor or nutrients within. The only difference with microwave heating is the uneven heat distribution. (hence why you need to rotate or stir microwaved food during the cooking process).
To learn more about Idaho® Potato nutrition click HERE!