Control of chord symbol durations in MIDI output file?

*** SORRY.... I thought I'd searched everywhere for the answer and after posting here, found "Duration" under "Edit element". If I can delete this, I will. ***

As a non-keyboardist, I use MuseScore to create keyboard parts I then bring into my DAW as guide tracks when songwriting. Since these are basically lead sheets, I mix chord symbols for some parts with standard notation for riffs, etc. A key point is that those measures where I write the part in detail don’t have chord symbols above them.

The issue is that when I have a measure or two in standard notation, the last-played chord continues to hold in the MIDI file.

My workaround so far has been to Realize Chord Symbols so I can change the duration to “Until Measure End”. But can I change chord durations to “Until Measure End” without realizing chord symbols?

I know this isn’t a MuseScore issue… I’m using it for something it’s probably not meant to do, so I’m fine using workarounds or editing MIDI in the DAW if that’s what I need to do. Thanks.