In figure 12 the transition of pages is illustrated with black vertical lines. As can be seen from the graphics the voices continue at the transitions. The order of the pages as used in the first edition seems to be correct; according to the transistion notations as illustrated before and the continuation of voices.
Contrapunctus 14 consists of three partitions, the second and third start at bar 115 and 193, in each partition a theme is introduced. The partitions start on the middle of the pages, not at the end or beginning of a page, so there cannot be a misunderstanding of the order of these partitions.