Thank you for the response!

If I understand your suggestion correctly I think this may be a solution to a problem other than mine. Based on my understanding mapped content controls are used to populate different parts of a document with the same content. The issue I have is not that changes to a portion of the contract must be made to multiple sections, but rather that we have multiple contracts (separate docs) that all have similar parts like the intro or terms of warranty. As a result any changes to these must be done in each document which can be hard to keep track of. I'm trying to find a way to build the contracts using the blocks such that the intro or warranty section would only have to be edited once, and then the edited block would be pulled (along with all the contract specific blocks) to make the final document.

If this was your understanding I apologize, maybe I need to brush up on the techs behind your suggestion.