Leave Elevation for WP blank if used for a reference point only.  it will set fuel used to that WP as 0 (zero).  

Fuel consumption from previous nav point to next nav point if a reference point is used.  ex. WP1 is a Nav point and WP2-3 are Ref. points and WP4 is a Nav point then the fuel will calc from WP1 to WP4.   

Route Totals updated to reflect fuel, time and distance.

Updated fuel for loiter time not being added when loitering is set on a NAV point after a REF point was made.