That's a tough one as there are many industry and local variances in radio telephony usage in contravention to International and National standards.
"Copy" is not a reserved Procedure Word in radio telephony in Canada and the bosses are technically
correct to suggest Roger or Affirm (not Affirmative due to confusion with Negative). However, their interpretation of "copy" seems even less correct than our customary usage of it.
I generally use "Copy" interpreted as below; as a response to a one to many message or overheard message.
... Copy does not mean the same as Roger or Received. It is used when communications between 2 other stations which includes information for your station that has been overheard and received satisfactorily.
But quite often in Emergency Services we still use "Copy" as an acknowledgement of transmission receipt instead of Roger even though it is not correct.
Good luck with the Management Team...