Official comment
Map Pilot has always overwritten certain settings from Go to make sure that the settings are appropriate for mapping. This has always happened in Map Pilot.
You can adjust the ISO setting using the top right click wheel on the remote if you really must adjust it but if you need a high ISO setting that is a sign that you should probably just slow down to deal with the longer exposure times. High ISO settings lead to increased image noise, especially on CMOS sensors.
We almost always recommend using the automatic setting.