Read the FAQ!
The ARC results are a combo of settings you can see in the Anthem's setup menus (e.g., speaker levels and speaker crossovers) and settings you CAN NOT see in the Anthem's setup menus (e.g., the Room Correction parameters).One neat thing I discovered that I thought I would share here is that if you need to access the crossover levels, you don't have to open arc on a computer. You can just use your remote and access settings in the Anthem receiver and scroll down to bass management and then change your crossover levels. I had accidently deleted my ARC file from my pc and I didn't want to remeasure everything just to change the center channel crossover level.
The Room Correction parameters are calculated and uploaded by the ARC app as part of what happens when you use the app to create your ARC setup.
If you change the Crossovers in the Anthem's setup menus, the Room Correction parameters are no longer "valid". I.e., they rely upon the Crossovers being what ARC thought would be when the Room Corrections were calculated.
If you've accidentally changed a Crossover in the setup menus and want to go put it back to what it is supposed to be, then that's fine.
But if you want to impose a DIFFERENT Crossover value, then that really needs to be done in the ARC app -- followed by a re-Calculation and re-Upload -- to get the Room Correction parameters adjusted to match that new Crossover choice.
Unfortunately, if you've lost your saved ARC results file, this can only be done by doing a full re-Measurement.