Editing piece, I want to respell all the Db in any octave as C#. First you have to select them, and the event filter inspired by 1990 Cakewalk can't do this.
If that feature had come into existence after I was more familiar with Rosegarden, it never would have taken the form it did. The selection event filter is long overdue for a serious rewrite, and it needs to allow you to select for a variety of Rosegarden properties, instead of being rooted in a MIDI sequencer mindset.
Find notes with specific marks, find indications, find flats or sharps for a given pitch, find notes in this octave but not that octave.
It's a really huge undertaking that has needed doing for many years, and I shall endeavor to get it done by 2015.