I don’t know how to direct transfer that data. I suspect @Klaveness is correct and there is no easy way.
Here is how we did it:
First the route is created / modified on ECDIS. On the ECDIS the route file is converted to MS excel file and is exported from the ECDIS to a USB drive. The excel file is then loaded into a PC with a printer where it can then be printed.
Then the waypoints are then manually entered into Waypoint for Windows (Waypoint for Windows v3.01(a) is NOT compatible with the latest 64-bit Windows 7 operating system. It is a 16-bit software program which only run on 32-bit systems.)
Then the waypoints can be exported from Waypoint for Windows to the Furuno GPS provided you have the right cable. You may have to mess around with this sort of stuff as Furuno is not an option.
Link your on-line library of waypoints to a GPS unit.
Save hours of inputting library positions into your GPS. Uploads in only minutes!
Back up your GPS library positions and routes
Built in upload/download GPS support for:
Leica (Magnavox) MX100, MX200, MX300
Magellan Nav DLX-5000 and DLX-10
Trimble Navigation NavTrac and NT200D
GPS units that accept the NMEA-0183 $GPWPL - Waypoint library position protocol are also supported
Create custom NMEA-0183 compatible sentences using the NMEA sentence builder.
From the Furuno GPS which is already interfaced to the Furuno radar it is just a matter of following the instruction in the manuals.
There very well may be easier ways. Several tech savvy second mates took a crack at this before it was solved by a second mate how had previously been an IT guy at Microsoft.