Reference consumption values erratic

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I’ve noticed that the reference consumption for my 2018 bolt are frequently changing within the route calculator. When I initially look up the vehicle ABRP calls the correct value of 3.54 mi./kW. Arbitrarily later on ABRP will have a value of 5.4 mi./kW. This error has a profound impact on route accuracy. I find myself having to check the route calculator every time to make sure that it is the correct 3.54 I’m not jumping to 5.4.