Including @moderators because if they deem it unauthorized I won’t do it.
I saved the Japan Live Event as a PLN file. Hint, you can do this for any Live Event/Mission. You just need to find the Live_Event.PLN in the \asobo-liveevent\Missions\Asobo\LiveEvent folder.
Keep a copy somewhere and then load it into your Roaming profile where you save your personal Flight Plans and you can have it forever (well, for as long as your silicon holds out anyway).
If @moderators are okay, I will post it for others to pull?