Yes, the Norman horse had several subtypes, which were merged/crossbred with Thoroughbreds to create the Anglo-Norman, which then developed several subtypes of its own, a couple of which were split off into the French Trotter and Norman Cob, and the remainder of which were bred with more Thoroughbred blood to make a basically homogenous type, which was then combined with other types to create the Selle Francais. I moved what was originally the first paragraph (dealing with the types within the Norman breed) to the history section. Now the Characteristics sections contains one paragraph dealing with the various types that developed in the Anglo-Norman (the first paragraph) and one paragraph dealing with what the breed looked like in the mid-20th century before it was merged into the Selle Francais (the second paragraph).   
 Regarding the hidden text in the 20th century section on "However, when Anglo-Norman breeders as a whole were asked to vote, they rejected the idea of amending the studbook.", Tsaag says she doesn't know when the vote took place. It was probably in 2012, but she doesn't know for sure.