When Visio file is saved as PDF format, hide hidden lines in a combined group correctly.
Example can be downloaded https://mega.nz/#!d8hCEQDB!jodLabH9Mi9bOKoEVsF8XQrFSxlopDSIGshLmHLkztQ.
A line is combined with a circle to get the "Off-center Radial Fill Effect" as described in http://www.visguy.com/2007/08/30/off-center-radial-fill-effect/. The effect is great in Visio. Nevertheless, when the file is saved as PDF foramt, the hidden line becomes visible, as shown in the file "BugReportpdffrom_vsdx.pdf". Please correct this behavior. Many thanks !
Information that might be useful to diagnose the problem: https://gitlab.com/inkscape/inbox/issues/121