if anyone here is using Gamen's save editor (basically something that converts the save file into an editable XML)
the maids you first transfer will get isMainChara trait so yeah... if you first transfered your non waifu maids and dont want them to be the secondary characters then I suggest that you give them isMainChara=F
the maids you first transfer will get isMainChara trait so yeah... if you first transfered your non waifu maids and dont want them to be the secondary characters then I suggest that you give them isMainChara=F