If I Play 10-17 Holes, Will it Count as 18 Holes For The Purposes of Establishing a Handicap Index?

When establishing a Handicap Index, or building up to 54 holes played and posted, if you play between 10 and 17 holes, the score made on the 9 holes with a 9-hole Course Rating™ and Slope Rating™ would be posted for handicap purposes. Any remaining holes would be disregarded.