Hi Vagodspeed.

If you want to use this script, you should be a bit familiar with using VBA scripts and the scripting interface in Office. If you are not familiar with it, there's more chance of breaking things

The latest version of the script as I posted it is meant to be added as a module in a macro-enabled PPTM file. Then, additionally you need to open the 2 files where you have the source notes to be copied and the target presentation where the notes are meant to be copied to.

You have to update these lines in the code with the actual filenames:
Set oSource = Presentations("mySource.pptx")
Set oTarget = Presentations("myTarget.pptx")

Once all is open and code updated, you need to go to the scripting interface and call the script from the immediate window as I explain in the comments using 'call switchNotes()' (without the quotes).

Good luck