I have a self-intersecting line that I tried to split using the Split Features tool in the Advanced Digitizing Toolbar. The problem is that when I try to split the line at one point, the line splits at every point where it crosses over itself.
This line was originally a tracklog generated in WGS 84 using a Garmin GPS. I imported it into QGIS in GPX format, and saved as a shapefile.
What's going wrong here?