Library panel "update" option grayed out (Ai to An revision workflow)
Apologies for such basic questions, but I am woefully new to animation programs and cannot seem to find an answer elsewhere
I am starting an animation project and am importing an .ai file. I need to begin the animation to show progress to my team. I know I may need to make color/shadings revisions to the artwork later and I don't want to have to redo animation work. From what I've read from Adobe, you can click a library element and choose "update" from the library panel options so I've chosen to import instead of pasting assets. But my "update" is always grayed out, even on reimport/restarting program.
1) Is there something I need to do differently on import to enable the update option? (I'm in Adobe Animate v 20.0, macOS Catalina 10.15.1, tried Import > to Library > Convert Layers to Animate Layers as well as Single Animate Layer.)
2) I'm using the same mindset I would if I were creating a piece in Id, where I can update linked assets and refine as I go - is this the wrong approach? Should I expect to only revise art in An itself once an animation has been started?
Thank you all!