Talk:Jackknife "Aggressor"/@comment-24545120-20140214014750/@comment-13275021-20140221151856

Note that the ruling with Armorknights Cerberus and Armorknight Succubus specifically says, "When a monster with soul leaves the field, the cards in its soul will be sent to the drop zone." Moving Armorknight Succubus from her monster zone to Armorknight Cerberus's soul is apparently considered "leaving the field," I guess since you technically pick her up to place her under Cerberus.

So, since Jackknife cards are called directly on top of one another, I'm thinking that isn't considered "leaving the field," ergo they keep the soul.