Copying/duplicating multiple drawings at once.

Hi there. I have animate pro.

How do I copy/paste multiple drawings at once? When I import some drawings into toon boom it gives me 1 frame each, but I want to copy them all so I have two frames of each drawing (while keeping the drawings linked to each other like in a copy/paste as opposed to when you duplicate a drawing so you can make changes to it).

Is there a streamlined way to do this? There has to be, right? I’ve been copying/pasting each one individually.