Add horizontal position of rests in MusicXML

A very strong feature of MuseScore is detailed exported XML, including horizontal position for each note ({note default-x=...}). But this parameter cannot be used, because it is absent in RESTS. It makes no sense to know the position of only part of the elements of the score, because rests are no less important than notes. But when the tag {note} contains {rest/}, it never contains "default-x=.....".

Could you add the parameter "default-x" in rests too?

(See screenshot of MusicXML with my graphical remarks)