Hello & Welcome,
Can you tell me the Model number of BOTH units?
If they are both nuvi units, you may be able to connect them to a computer and copy all of your saved "favorites" between units.
This is how that can be done
In order to back up your Favorites:
Once you save a copy of the GPX file on your computer, you have successfully backed up the waypoints within your device.
To restore these Favorites on your device:
At this time the favorites you backed up should be restored on your device.
1. If you own a nuvi 1xxx series device you will not need to open the Garmin folder.
Note: To open a .gpx file on your computer, you must have MapSource mapping software installed.
Please let me know what happens.
Oh - you didn't mention in your original question that you were trying to go from a streetpilot to a Nuvi. I believe the formats for the addresses are a bit different between those models.
I can do some checking, but I believe that a special "program" (script) would have to be written to convert from one format to the other. I believe the StreetPilot used the MapSource program to save & reload "favorites", and the Nuvi now uses the POI-Loader program.
Sorry about that, but it would probably take a programmer (or hacker) a few days to come up with such a program to do the conversion.
Take Care, Greg A.