More than a matter of not changing the date of when the season would expire, it is a matter that the NCSoft team does not know what to do with the game today, they wanted to squeeze some money out of the new two transformations, with that they decided include a new patch where a new season for asparanta will be included to give some history to that change, version 8.2 was released in May of this year and they hope to release version 8.4 next week, which is no more than 6 months of Empyrean Lords Season for NA, in korea that season lasted about a year if my memory serves, they want to implement things so fast that they don't realize the problems that those changes bring.