How do I organize the Specials for Reincarnated as a Slime?

[mildlyjelly]

The folder structure on disc is:

Code:

->That Time I Got Reincarnated as a Slime
  -> Specials
    S00E01 - Veldora's Diary
    S00E04 - Rimuru's Glamorous Life as a Teacher, Part 1
    S00E08 - Veldora's Journal 2
    S00E10 - Visions of Coleus - To Coleus
    S00E11 - Visions of Coleus - Great Phantom Thief Satoru
    S00E12 - Visions of Coleus - Purple and Roses
    S00E13 -Digression - Diablos Journal

The "TheTVDB Season Id" for the "Specials" folder is: 777470 (https://thetvdb.com/series/that-time-i-g...official/0)
All of the episodes match up with the exception of episodes 02, 03, 04, 09, and 13.
Playing with the episode numbers, this is what jellyfin is showing me:

• E01 = Special - Tales: Veldora's Journal
  
• E02 = Special - Advance Screening Stage Greeting (Should be: "The Tragedy of M?")
  
• E03 = Special - Episode 7 Funimation Video Commentary (Should be: "Hey! Butts!")
  
• E04 = Special - Episode 14 Funimation Video Commentary (Should be: "Extra: Rimuru's Glamorous Life as a Teacher, Part 1")
  
• E05 = Special - Extra: Rimuru's Glamorous Life as a Teacher (2)
  
• E06 = Special - Extra: Rimuru's Glamorous Life as a Teacher (3)
  
• E07 = Special - Digression: Hinata Sakaguchi
  
• E08 = Special - Tales: Veldora's Journal 2
  
• E09 = Special - Sukuwareru Ramiris - 01 (Should be: "Scarlet Bond")
  
• E10 = Special - Visions of Coleus - 01 - To Coleus
  
• E11 = Special - Visions of Coleus - 02 - Great Phantom Thief Satoru
  
• E12 = Special - Visions of Coleus - 03 - Purple and Roses
  
• E13 = Special - Sukuwareru Ramiris - 02 (Should be: "Digression: Diablo's Journal")
  

Did I stumble across a bug, or do I have my filenames wrong?
Is there a way to use a different Meta Source for the "Specials"? When I edit the Meta Info, it only gives me "TheTVDB Season Id:" option under "External IDs: ".