Unlocking UVHM more than once leads to a weird save file

[apocalyptech]

Was testing out unlocking OP 10 and Level 80, and noticed that if I unlock OP10 once, then unlock OP10 again, you end up with a weird char file which has an extra Playthrough option available when choosing the character. Specifically, above Ultimate Vault Hunter Mode, there'll be a new line which reads:

?INT?WillowMenu.Playthrough.PLAYTHROUGH_NAME_4? Mode

Strange! I didn't bother to find out what happens if you choose it, but it's presumably not great. Will have to track down exactly what's going on there.

[xcier]

I don't know how I am just seeing this but I am sure you def know by now!

This is what most people use for boosting as the region data isn't synced to player level in this game mode.
Enemies on console cap out around 230~ however the patient in zedds and jack in the final base game mission can be set to as high of a level as they want (suggested 99999999). Max missions level is 497 (which is also synced with region data).

Copying story data and pasting it into a the 4th playthrough is very nice and easy since this is the only tool that can do so.
As always missions are indexed 0-3 so make sure your region data is set for playthrough 3 when changing!