Copying a section with “invisibles”
If you want to copy and paste a section which contains hidden elements, adjusted beams and stems, etc., there are two ways to proceed:
Use the filter bar to make indicators appear in the score. Then select these indicators together with the notes before you copy.
This ensures the notes are copied with their formatting, etc.
Double-click the bar handle of one of the bars, and make sure all relevant event types are activated in the dialog. Then select the bars you want to copy by clicking their bar handles, and copy them by Alt-dragging the bar handles.