That is fine. Thank you for letting us know.
Both courtlings have been voided. You may continue to use the designs as they are, or change them up without restrictions if you like, just know that they can no longer be considered part of the courtling species. If you ever trade, gift, or sell one of them the new owner cannot reintegrate them into the group as they are now their own separate designs, and should be treated as simple "one-off" designs from this point forward.
Their masterlist entries will remain up solely for the sake of keeping track of the fact that they are indeed voided as courtlings, and so that, if they do ever have future owners, they cannot try to pass them off as being active courtlings.