Updating gpsfile data topos to Base camp?

[doakerw]

If you have gpsfile data topos  already loaded in Basecamp that have been updated since you put them in Basecamp, can you update those topos without having to unload and reload those maps?   
thks-------doakerw 

[Seldom]

Sometimes it works.  Sometimes it doesn't. It may look OK in BaseCamp, but not transfer to a GPSr.   IIRC when I simply rebuilt individual tiles rather than the whole mapset and tried to send it to my GPSr I'd get an error message that read something like: "Insufficient space to transfer your 2KB file, you only have 2GB available on your GPSr."  I don't recall the specific wording, but that's the gist.