Erika
Yes, using box select to stretch all timelines doesn’t affect the FPS of sequence attachments—that's a separate issue.
What I actually want to talk about is automating the show/hide of sequence attachments. Right now, I have to manually show the attachment, play the sequence, then hide it again. Ideally, I’d just play the attachment, and it would auto-hide at the end frame.
Maybe this isn’t feasible with the current structure—I know it sounds illogical—but I wanted to bring it up in case there’s a simpler solution I’ve overlooked.