Help!: gpx file import and laps

i've found that imported data from my garmin fails when i use the lap function to break up the course. many spurious legs are generated connecting point start and end points with straight lines. sometimes i  hand-edit the gpx file so that is shows only lap 0 and the last lap (renamed to lap1), but my best results were from deleting all of the lap data from the gpx file:

delete this entirely:

  <wpt lat="39.102333" lon="-76.757354">
    <time>2008-02-25T16:24:07Z</time>
    <name>Lap 0</name>
    <desc>2008-02-25 16:24:07</desc>
  </wpt>
  <wpt lat="39.102462" lon="-76.757441">
    <time>2008-02-25T17:02:00Z</time>
    <name>Lap 1</name>
    <desc>6.62km, 37:54, 10.5kph</desc>
  </wpt>

hope this helps someone.