Old item set creator still applying to my new client

Hello! Remember years ago you could create item sets as part of the LoL-gameclient? Now that the new client has been out for a while now, why is it that my old client is still applying those sets to different champions. While the new client does not permit modifying or creating them at all.

Now stuck with old (sometime irrelevant) item sets in a new client that doesn't permit removing them or modifying them. I would like to ask the question once more...

_Either remove them entirely from the new client! or Implement the item sets if they are already available and integrated into the new client (as it obviously is porting them from somewhere)! _

It would be beneficial for individuals to port the item sets they have earned through a successful game into another. Similar to how we can save a replay and graphs. Regardless of individual players preference for the use or not. It is a tool which is useful (for those who do use it) and has received discussions in the past.

Any player can disregard a tool. But those who do like self-improvement will have a nice integrated tool that improves their quality of life in the game in that aspect.