Xterra’01 mileage correction w/S220 93c56 chip

Hey guys, I need to adjust the mileage in this Nissan Xterra, When the Instrument cluster is in the car, it reads 206,000 and when I read it after I removed the chip, with CPT Dash software, it shows only 182,000. Any idea why; is there any other way to read this correctly.
I’m attaching the file if someone can read it correctly and can adjust it, I need 122,415 miles. I couldn’t attach the file, but if someone can help I’ll send it on PM

Thanks in advance