Globally replace an image in a recording

I have a software demo with 84 slides. I have an image in the project library called logo.jpg that appears in most of the slides. I added the image to the library, and drag into a slide to place it.

I need to replace the logo image with a new image, replacing the old one throughout the recording.

I cannot find a function to globally replace an image file. What is the best way to add the new logo image and have it replace every instance of the old image?

FYI: I don't believe templates or master slides are an option as the logo is at different X/Y coordinates throughout the recording.

  Thanks!