Can the mods of the series please add Barbie Dreamhouse Party to the series?

As the super mod of the game, you can go to https://www.speedrun.com/knowledgebase/supporthub/game-adjustment and select "be part of a series" under the subcategory drop-down. Fill in the game information at the bottom and the site mods will take care of that.

I would add the game to the series myself, but series mods can only add brand new games to the series, and not edit existing games.

Okay thanks. I have submitted my request.