Here's the updated version (I only shortened the name of the save files) of my example campaign, it works for me.
The only problem I know of, is that it doesn't work if the filepath (name of the campaign file + the save-game) is too long, so you should keep these two short.
Those changes don't really influence the difficulty, they just make the gameplay more smooth aka better. Having to walk back to the pokemon center (especially without a bike) was just annoying, I really liked the changes they did.
Another example would be that they don't show the current weather...
You can watch the first set for free, you just need to make an account.
It's pretty damn hard to find the VODs on other sites nowadays, GOM managed to take almost everything down within the last few weeks.