Triangle in Drum Set: How to copy Muted Sound

I have a weird problem: Even though I can record open and closed triangle in a drum set and it is played back correctly after recording, when I copy a bar, it loses the “mute sound” at destination.

After recording:


Copy of the same measure:


How can I preserve the muted triange when copying a bar?

I finally managed to solve this on my own. I’m not exactly sure which steps did the trick, but I edited my drum set to “know” both the muted and open version of the Triangle:

I then added the “+” articulation for closed style:


Now, playback as well as playback after copying the bar both work fine.