I recently downloaded the US PLAN. NW map onto my Garmin 60CSx using an updated version of MapSource. Everything seemed to go smoothly except when I opened the map on my GPS, there are a lot of additional black lines labelled "SMA" all over the map. All other details seem OK. I did use the highest level of detail in the download.
Any ideas of what I might have done wrong and how to eliminate the SMA lines would be appreciated.
Thank you.
Danny