SE sort out your Updater ><

[AlexiaKidd]

Again.

If File X for the Market Ward System is sized 75MB exactly.
SE Changes the code around but after compression and encryption the core file is still 75MB
You still are going to have to download it again.

Thats how it worked in FFXI as well.

Only 1.17, 1.17a, 1.17b and 1.17c all made different changes to other parts of the game so this doesn't really support your theory and it's not just the 1.17 patches, 1.16 and 1.15 were exactly the same too.