Hmm. They do (or did) have a lot of people in their company (when I say a lot I don't mean a small handful of people). What are interns for?
A lot of stuff they do is also done with scripts. If you wanted to replace an animation & the other animation has the same amount of frames then just replace the image files in the folder with animations that contain the exact same name or open up the .ved file in a text editor like notepad++, sublime text or atom, search for the animation file-name (minus the prefix value), select all instances & replace them with the new file-name.
There are multiple ways to replace files & animations & pretty much everything. The editor however is currently as the editor is...