Actually, i changed airport reference point and raised an attitude by 1 meter. As a result, runways' elevation were fixed, but elevations of parkings and taxiways weren't. ADE manual suggests that when an airports' elevation is being changed, the same should be done with terrain polygons which is obviously beyond ADE's capabilities.
Thus, yes - perhaps we should live with that unless FSDT brings the fix, which I believe is quite fast and easy.