Since the MRA planner and the MR Navigation App use the same Here map, there will be no differences between points on your route after recalculation. The only segment that changes will be from your current location to the next shapingpoint. requirement for this to work is to have equal routing options both in MRA and Navigation. The easiest method to have that, and keep that, is to not use non-standard routing options at all. You can use those while planning, but it is best to adapt your route to be equal using the default routing options before you start using it. Doing so there is no need to have recalculation turned off. Except perhaps when you do not want to skip a traffic jam, as Nick says.