pommepouffe

further clarify how the data will be merged for each system as there’s a difference between the game systems.
1. Legion: The data from the one world (out of the many merging worlds) that has the most progress will be applied to the new world.
2. Monster Collection: The Monster Collection data from the world that has more data will be brought to the new world.
If you don’t like the data set that is applied to your new world, please contact our Customer Support team so we can swap the data set with the other world’s data after the merge.
It will be helpful if you take a screenshot of your Monster Collection progress and share it with us when you ask for the data change.
3. Achievements: The completed achievements will be saved after the world merge. But due to the complexity of the data structure, there’s a chance that the saved achievements that are still in progress might not be the most up-to-date.

We apologize for the delay in posting the answers to your questions.
It took time for us to double-check and confirm if all the information is accurate before sharing with the community.

contains quests (that were fixed with the intent for people to be able to do these quests) as well as hair/face styles.
Just add the teleport option back to the Nana NPC.

saved data would not be that of the most progressed.

upper limit should shift upwards, but it sounds like it isn't doing so for you so it keeps pulling back to the other limit. Have you submitted a ticket as well?