No. Pounds and Newtons are both units of force, but a kilogram is a unit of mass. The Imperial unit of mass is called a "slug". There's also a "pound-mass" (the mass that weighs one pound) but it's seldom used.

How about this: Movement of magma within the Earth's mantle moved the plate under the kilo up, moving it farther from the Earth's centre of gravity. (The kilo lost weight, not mass.)