GGZ Files

I geocache with my Oregon 650 and use BaseCamp to view and plan tracks. I am amazed that BaseCamp can't see my geocaches if they are in a ggz file. Garmin introduced this file format a year and a half ago. Any ideas when BaseCamp might support ggz?

BTW, I use gpx so I can view the geocaches on my 650 while in BaseCamp.