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Are the new maps digital or old school folding type Lentil?
If they're digital and on a GPS, I agree the easiest would be to reset the GPS datum to match Google Earth, I had figured they were paper...

Pass, hopefully someone here is into GIS.
Google earth only has a few preset coordinate options.

Do you mean a different coordinate system, as in decimal degrees vs degrees minutes seconds vs UTMs.
Might just need to select a different format on the google earth