Minfilia and the Echo

[Zetsumei_Tsunarashi]

I think it's likely an oversight because:

Spoiler:

Minfilia is a character Yosh-p created after he took over FFXIV whereas Ascilia was created by Tanaka's team. It is only in ARR that it is revealed that these character's are one in the same and this was likely only done as an afterthought. It's likely that Ascilia was never originally intended to be Minfilia.

A good plot hole for the lore team to fill though with future quests.