Replacing ABS module with salvaged part

I got an ABS module off a 2014 Genesis and was told “the main computer will read the used part and see it has different mileage on it and it might possibly fry the other computers”. The mechanic said “the main computer will think your trying to roll back the odometer.” This sounds ridiculous, any validity to either statement? I also read somewhere you can take the computer off the old ABS module and put it on the new/used one to trick the main computer. Any help is much appreciated!