musescore/MuseScore — pull request #682 by Isensee (2014-01-31 12:46:36+00:00)
Title: 23680 import accidentals

"Necessary" accidentals and accidentals with special xml attributes are handled as before. "Unnecessary" accidentals, as may occur in xml scores (like most courtesy accidentals in real written or printed scores), are identified and marked as user accidentals to prevent them from automatically elimination.