I "changed" mine when I bought my vehicle - the "original one" was also missing in mine. My guess is that it is standard practice not to include one. The hardest part was squeezing the sides of the glove box in far enough to get it to drop down. After that, easy!
2009 Compass Sport, Green, 4X4, 5-spd
Roof rack, sunroof, fog lights
Boston Sound package