MusicXML's justify parameter is not respected

MuseScore allows to align lyrics under a note, which is great.

The problem is that the alignment is not preserved when a score is exported to MusicXML - then all lyrics are centered.

I found that MusicXML provide the possibility to store information about lyric's alignment. According to the MusicXML specification element may have justify attribute, which (as I understand) describes exactly that.

Similarly, MuseScore does not respect justify attribute when a MusicXML file is imported.

I consider that as a bug (missing implementation), but I will understand if you classify that as a feature request.