Well, after many years as a car mechanic, I thought I knew a bit or two...
However, here is the professional explanation, very similar to mine:
Just as a side note, as I've had my pads contaminated, I had to make sure every little bit of old transfered material has been removed from the rotors.
Well, I guess each one of us has his own procedures how to treat the bike. I have mines...
As for this forum, the ones experience can be useful to somebody else but for somebody it probably can't...
As I said, I have my own way after 35 years of riding... I can share it or keep quit...