In my view the foregoing arguments are logical. In reality though, the design authority for the aircraft is taken over by the new company and it is this company name that is used henceforth. Thus you will see reference to Boeing (Douglas) C-47s. It would be interesting to see a newly issued certificate of airworthiness for a US registered C-47, for example, to see what is actually quoted.
There are other types that have changed names, Britten-Norman to Pilatus Britten-Norman and back again! The HS146 to BAe then Avro RJ. A 146 is a 146!