You likely have to redo the animation. It doesn’t hold over from one page to the next page. Annoying that it happens, but I didn’t see a work around for that on my own search.
As Justin said, check for page-level interactions, you have to copy paste them to ensure the triggers ( scroll trigger most likely ) is on all of the pages you want.
Just to be clear, are you talking about literally copy/pasting interactions? Or applying saved interactions to new elements? I haven’t copy/pasted an interaction before, so just want to be sure.
I haven’t done it in awhile but I don’t think you can copy-paste the page-level interactions themselves. You’d just look at the working page and then recreate the exact same page-level interactions in the not-working page.