Thank you for your reply, hopefully I can make things clearer...I’ll start back at the beginning to give more detail....
All of my files are stored in one location on an external hard drive. I’ve moved my Library to that same hard drive, so I’m working off of that drive instead of my Mac. I’ve imported all of my .mp4 movies into iMovie and sorted into Events. I’ve started a new project and started clipping and editing my movie. Everything is good.
I ran out of space on my external hard drive, so moving everything to a larger hard drive. I copied all of my original media and the project library to the new drive. When I open my Library on the new drive none of my media loads, it shows “missing file” on every clip.
So I dug down as you mentioned to “Show Package Contents”, and found the Original Media folder. When I open it, it shows me a bunch of files that are all aliases. These aliases all reference the original hard drive. My understanding is that these files should be .mp4 files (or another movie format) and should have been copied over when I copied my Library to the new drive (this is how it’s worked in the past for me).
I am not sure why my Project is saving everything as alias files, and I am looking for a fix.
The second part of my question states that all of the movie files that I would expect to be saved under the Original Media file seem to be saving in a new folder called “Final Cut Original Media”.