[MusicXML import] incorrect layout slur to grace note
Load attached file, export as MusicMXL and import MusicXML. The slur layout in measure 3 is incorrect: the anchors are below the notes, but the slur is upside down.
Hint: in the mscx file produced from the MusicXML file, for the third slur the "up" parameter is missing and the start and stop notes are swapped. Both seem required to get correct layout.