Take a look at my screenshot:
Trumpet 1 plays con sord in m60 and beyond. All other brass play con sord in m62. I didn’t put a “con sord” in m62 of the trumpet 1 part because it’s redundant for that player.
However, in the full score, there’s a page break at m61, therefore it looks strange for the CONDUCTOR not to see trumpet 1 with a “con sord” (at least, in brackets) in m62. It looks like an omission.
How can I insert a “(con sord)” in trumpet 1 m62, but not have it show up in the trumpet 1 printed part?
(I’m thinking I would include the parentheses as a tacit reminder that it’s redundant, however, I’d be interested in opinions if you would leave the parentheses off, for consistency with the other instruments.)