System left edge position edits not propagated to other layouts

I’ve moved the left edge position of a few systems (not system one) on a part page to make room for some labels just left of the system clef. There are zero over-rides (no red corners on page template pages). This is a part of a lesson book set of exercises, not a formal composition.

When I propagate this part layout to others, hoping to copy these left edge system position adjustments to the other layouts, the edited system left edge positions are not propagated.

Are system/note spacing edits created with the note spacing tool in Engrave mode not propagated? I’m not excited about making these adjustments in all other parts manually. (Again - there are zero over-rides in the template)

As a work-around, I can duplicate the edited layout and change the player to another part with the system left edge edits maintained, but this takes longer than manually adjusting every part.

I’ve searched “items not propagated” and there are a number of old threads, but nothing related to system left/right horizontal adjustments. What am I missing, or are these note spacing tool edits not propagated?