VA.3dm (2.9 MB)
VisualARQ sections tries to “clean” output by removing tangent edges inside objects. In this particular case, the problem is that the groove width is 1 mm, and as the document tolerance is also 1 mm, VisualARQ will remove this edges, as they are considered the same edge.
You can however fix this very easily: you can override tolerance for the section view to 0.1 mm, so the edges will keep visible:
NOTE: Take into account that “Tolerance factor” is a factor that will be multiplied by the tolerance, not an actual tolerance.