March 20, 2018 9:09 a.m.
says... Accepted answer #2
While you've answered your own question, I was intrigued by the issue and did a quick look through the rules for my own edification. I figured I'd pass along my results on the off-chance you ever see a legal version of this interaction.
When a card like Lord of Lineage is put in any zone other than the battlefield, it only has the characteristics of Bloodline Keeper Flip (Rule 711.4a). It is still the same object, and still the card exiled with Ixalan's Binding, it just has a different name now than when exiled.
March 20, 2018 9:32 a.m.
cdkime thanks for the input.
I guess the whole Exile and return to the battlefield interaction kind of makes sense.
When it comes back to the field it will return sunny side up. Therefore it is that side up in Exile.