Hi! First off this is awesome that you set this up!! I am currently trying to find ways to hunt Manaphy in an easier manner and this helps a bunch!!
I do apologize though as I'm still very new to the specifics of hunting Manaphy and the issues with it's TID and shiny values. I know generally you do have to trade it to a new game to break the shiny lock,and I am a little confused on the explanation for how to hunt these Manaphy eggs in the save you supplied. Do I need to trade these ones over to a new game to hatch them,or is it just making a new TID on the saves themselves, hatching the Manaphy eggs and if none are shiny redo the process?