As of version 10.22, the Answers to Exercises appends answers to the main text. The main part of the text is stripped of some parts, and its formatting is affected insofar as the text and answers are on different size pages—thus it is less than ideal for ordinary reading (or printing). However, the combination of text and answers makes links between them live. This is particularly useful in later parts where there are multiple cross-references between answers and previous theorems.
As usual, I appreciate your letting me know of problems, perhaps as a comment on this post.