Animation not working on duplicate objects

Hi i have a 2 character made up of 6 parts a head a body 1 foot and one duplicated foot and 1 arm and 1 duplicated arm but when trying to animate them the duplicated arm and foot do not seem to work with the animation they are not being included when moving the transforms

any ideas why this is and how to fix it?

press the button the left butonos for muse in the animetion file and press ctrl + d
will do copy the animetion with what difference that he has settings from the animetio this time
for the copy animetion