Only one account will migrate in this instance.
If you see where a guest is already migrated and they have an additional account waiting to migrate, the ideal process is to:
Manually Gift the guest their missing points
Delete the additional account from "Awaiting Migration."
You may delete a record from Awaiting Migration by:
Clicking on the blue pencil to "edit" the record
Scroll all the way down to the end of the record and click "Delete." 
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