So from this conversation I can assume two things.
1. It is possible that since I have really taken my time and have upgraded in a weird way, that the maps somehow were shown to me early on. Perhaps a patch update that met certain conditions to allow the maps to be visible to me due to order of operations or some kind of logic that was not intentional. Remember, I upgraded to HW when it came out, but never completed the MSQ. This may be the reason I was able to see them. I patched and patched since then too. So, who knows?
2. The upgrade to Stormblood somehow reset this and now I have to complete the Ultimate Weapon quest to re-unlock it. This is an assumption of course. I have no way of knowing for sure.