ECM calibration messed up Odometer

[Newbietech]

HI, I would like to say i just became a member here but this website has helped a lot even when i wasnt a member. Thanks to all those who contribute here that makes life a little easy for a guy like me.

Now the question:
i have International LT625 with X15. yesterday i updated my ECM calibration using Insite 8.7 pro. everything when smooth but when calibrations were completed it messed my my odometer miles. i had 505,456 mile before calibration now it says like over 1 million.

now i know i cant go back to previous version of calibrations but is there anyway that can be dont to fix my odometer issue?

any help/input would greatly be appreciated.