I confirm that this is an important issue for MusicXml exports.
It is not possible to distinguish correctly between nested tuplets at present, either in v1.3 or 2.0 (current nightly build).
As this issue has not been looked at for over a year, here is a status -
v2.0.2 still gives wrong musicxml output.
The attached test file "nested-tuplets", when exported to musicxml, will produce an irrelevant backup node. This confuses everything, especially when importing (v2.0.2 gives an error message to this effect).
Status is unchanged because no work has been done on this issue. As it seems nested tuples are seldom used, it simply never reached the top of my todo list. Feel free to solve it yourself if it is important to you. I am perfectly willing to solve this sometime, but cannot commit to a delivery date, as long as higher priority issues keep popping up.
Comments
Also see #22547: [MusicXML] Nested tuplets incorrectly exported
I confirm that this is an important issue for MusicXml exports.
It is not possible to distinguish correctly between nested tuplets at present, either in v1.3 or 2.0 (current nightly build).
As this issue has not been looked at for over a year, here is a status -
v2.0.2 still gives wrong musicxml output.
The attached test file "nested-tuplets", when exported to musicxml, will produce an irrelevant backup node. This confuses everything, especially when importing (v2.0.2 gives an error message to this effect).
Status is unchanged because no work has been done on this issue. As it seems nested tuples are seldom used, it simply never reached the top of my todo list. Feel free to solve it yourself if it is important to you. I am perfectly willing to solve this sometime, but cannot commit to a delivery date, as long as higher priority issues keep popping up.
relates to #270643: [EPIC] MusicXML import/export issues
Came up again in https://musescore.org/en/node/313370
MusicXML export of nested tuplet was fixed in MuseScore 3.5 in May 2020.
See #299759: [Musicxml Export] - Bad note value export in nested tuplet.
Import still not implemented as of today, but I am looking into it.