Suppose Question A had a bounty placed on it, and then an exact duplicate Question B with answers on it (that were written after the bounty was set) was migrated from a different site, and merged with it.
Whether through the automatic selection or through manual awarding, the bounty is awarded to an answer whose author does not have an account here, because they answered Question B.
Can this happen, and if so, what happens to the reputation? Does it get lost? Awarded on association?