hello, i have also similary problems
i am trying to insert the shore lines of a river in autochart from shp files
but the lines are reduced to a doted line, the extremities of the vectors, and more there is a small offset toward East
i converted the shp in kml in line but i get "no data found" when importing
a solution could be to import a background picture and draw manually lines on it but how to do this fior example with a geotiff picture