Change all referenced files in Aperture for entire library?

Hi experts...

All my Aperture files are on an external HDD and I had to copy everything over to a new drive recently. The old drive was called "photos", the new drive is called "My Passport". Without thinking about it, I made the new directory structure a bit different. On the old drive, my structure looked like this:

Volume = photos

File Path = photos/year/month/name_of_project/original_files.NEF

On the new drive, the structure is like this:

Volume = My Passport

File Path = year/month/name_of_project/original_files.NEF

When I started poking around in some of my projects, I found that Aperture told me that the originals were either missing or offline. I figured out how to reconnect all the originals in a given project - but I've got several hundred projects and reconnecting everything is going to be tedious and time consuming.

Is there a way (either through the program or via a script) that I can tell Aperture, essentially..."hey, for all the images in my library where the master used to be on drive 'photos' at <filepath>, they're now on drive 'My Passport' at <same filepath name except for top level directory>."

Alternatively, if I rename my new drive to "photos" and then put all the 'year' folders under a directory called 'photos', will Aperture be able to find everything magically?