We saw when Madara died he was aged and he had only one sharingan so when he was revived why he was young and had both the sharingans.We know that when people are revived with Edo Tensei they are revived with the abilities he had before death ,for eg-Nagato(his hair was white and he had the rinnegan bcz rinnegan wasnt his kekkai genkai) and also granny chiyo when she died she was aged and when revived she was also aged.So how come Madara is young and had both the sharingan?