1. Can't figure out where exactly in the workflow this older pdf is called 

2. Even when I replace the old file, it isn't reflected. 

I'm using workflow designer and using the fill pdf field several times throughout my workflow. I'm new to using workflow and did not create this specific workflow either. In the workflow admin console, I can see attached objects and see the old pdf that it is referencing to fill the form (external objects & see attachments). I can't specifically figure out where this old pdf is actually being called in my workflow- so I can't delete it.

So, I right clicked to edit that attachment in console & chose to replace it with the updated pdf. In the actual workflow, the updated pdf looks correct. However, when triggering the workflow, it seems to continue to call the prior form even though I've replaced the pdf with an updated one.

How do I make the updated form be the form that is filled in?