Please help! Editing Shared Decks

A friend and I are alternating editing a pre-made deck to make the cards more applicable to what we are studying. Therefore, we are often adding extra images to the cards. However, we go to send each other the cards, the new images added do not show up on the other person’s cards. How might we be able to fix this? Any and all help is greatly appreciated!

Maybe you forgot to use the Include media option when exporting?