This is a fairly useless post... Let's begin cracking into it then.
1: Samehada doesn't like fire. True, but is still absorbed the fire. Without Any Damage. I've supplied this evidence in the previous post.
2: Samehada has never. What occured between Bee, Kisame, and Samehada was all apart of the plan to get Kisame close to Bee and Naruto. In fact, he has shown to even force the sword to do his
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.
3: As for Amaterasu, it obviously does or Ay and Obito wouldn't of reacted to it before being hit.