Could it be that one is showing coordinates from the Project Origin and the other is showing coordinates from the User Origin?
As another point, what I am seeing is that there is accuracy issues between the coordinates displayed in the object and the coordinates seen in the Coordinates Box/Tracker. This could be because it it so far from the Project Origin.
Maybe the variable that stores coordinates in ARCHICAD is a "float" type which is accurate only to 7 digits, I am not sure. The only thing I know is there were other issues in the past stemming from the model being very far from the Project Origin.
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