The map can be copied and used in BaseCamp and routes etc created sent to any device, just that the map cannot be sent to another device. To move a map to another PC use JaVaWa's GMTK program
This topic is covered in our FAQ Installation of maps to a second computer which states:
The End User License Agreement (EULA) for Garmin map products allows Garmin maps to be installed on a single computer or network for personal use. This includes full-version map products on CD/DVD along with any rightfully obtained updates to preloaded maps on a Garmin GPS device.
In situations where a computer crashes or a new computer is acquired, a map product can be installed to the new computer as long as it is uninstalled or inoperable on the original computer. A Garmin map product installed on multiple computers requires a separate license for each computer.
Obtain additional licenses by purchasing a Garmin GPS preloaded with the desired map.
Installing map(s) in accordance with the EULA will ensure the agreement is met.
First I've heard of that and a bit daft really. Many of us have BaseCamp on our desktops at home and on a laptop. To route plan on either we need the map on both and there must be hundreds of thousands who do so. Are you really saying we're legally not allowed to do so?