What happened to the Japanese Envoys?

Has anyone got further details on Japanese Airspeed Envoy’s?

Airspeed delivered the following during the summer of 1935:
G-ADCB re-registered as J-BDDO to Japan Air Transport
G-ADCC possibly as J-BDBO to JAT
G-ADCE as J-BDEO to JAT
J-BAOH to Mitsubishi then to JAT
possibly J-BAOI to Mitsubishi then to JAT
J-BDCO to JAT

Mitsubishi built the following under licence as Hina-Zuru (Young Crane) between 1936 and 1938:
J-BAOD, J-BAOF, J-BAOK, J-BAOL, J-BAOP, J-BAOQ, J-BAOR, J-BAOS, J-BAOV, J-BAOW
3 went to JAT, 4 to Manchurian Air Transport and the others possibly went to the Japanese Navy (but which to whom?:confused:)

Were any civil survivors impressed into the Navy when Japan entered the war?
Was the type given an allied code name (I can’t find one)?
Were any positively identified by allied forces at any time?
Or were the Envoy’s used as local hacks by officials?
Were they scrapped for being of British design?

It is significant that Nevil Shute does not mention these sales in ‘Slide Rule’.