Adsense and Amazon Publisher ID

While flipping start up blogs, if the buyer provides u with the Google adsense and Amazon publisher id, how to change it?

1.Is it possible to change Google adsense Id by just changing the publisher Id no in the code?

2. Same way, can we change the Amazon pub id in the code given by amazon

Does that work or is there any alternative or should the buyer himself get the code from his Login?

Yes, you just need to change the publisher ID.

Bear in mind that if he has channels, you're going to need to create your own matching channels and change the channel numbers in the Adsense code as well.