You are right! there was a part for Raws and another one for translated versions. Why is not like that anymore?
Maybe they changed it after it went down last time? That is my theory for now. This is I believe the third time for me this week that I got excited about an update but it was just raws , so I got a bit confused about it.
My theory is that the one who uploaded the chapters uploaded them like regular chapters and thus named them as japanese raws, not knowing how to place them on the "Raws" section. After reporting it, mangago fixed it quickly.
I swear mangago used to keep raws separately from the translated versions....