Does ATC not see the altitude changes displayed on ICAO flight strips? A captain was mad at me for thinking I filed him at a wrong altitude for the direction of flight, yet if you look at the ICAO flight strip, it clearly shows a change of altitute at the appropriate point. The captain stated that ATC is only concerned with the final altitute. If this is the case, why are the ICAO strips (at least in our system) set up to display altitute changes. I mean, didn't the U.S. choose to go to this format?