Confusing behavior- viewing Software Distribution Tasks

A few days ago I was able to add some files to my BigFix server using this procedure:

I go into a site and right click on Files to get “Add files…” I browse for a file and click “Add files”. It adds the file.

In Systems Lifecycle, I expand Software Distribution Tasks and scroll down and find the task that was created by my Add Files action. Under Details, Actions, I have a handy way to cut and paste the prefetch and URL block.

Today, I tried doing exactly the same thing and the software distribution task isn’t showing up- I only see the one from a few days ago. I tried a few times and it still doesn’t show up, even though the file is added and I can see it in my site. What could I be doing wrong?