In Mapsource you can access the tracks with the menu on the left side of the screen. Highlight the tracks you want to join and right click the mouse. " join selected tracks " is the line that you need to click on. The tracks will merge into one. CAUTION!! If the tracks are seperated by any great distance Mapsource will draw a straight line to connect. The length you get then will be skewed. I usually delete the tracks with less than 5 points and then join the rest. It's wicked easy this way.........
AND ALWAYS REMEMBER TO RENAME THE TRACKS YOU SAVE.
Leaving them as track 001 will cause you to overwrite it the next time you download tracks to Mapsource.
Why not live life like it is your last day....instead of pretending to be a member of the Peter Pan Club and believing you will be around forever.