SPAM/SAINT - Post activities - Customizing Adjustment?

Hi together,

I am looking for a guide, which describes how to get new customizing through SAIN/SPAM into the customer client.
I've already found note 337623 (which for me generally says, you can't adjust it automatically, just activate BC-sets what are required) and an article about SPRO_ADMIN, but I think this is more about creating a new view according to new customizing-functions.

So, is there a description, how the new customizing settings, which are imported to 000 can be adjusted automatically to customer-client?

On that what, that I just get new functions but existing functions don't get destroyed....?

Or is it an illusion?

thank you