MMEA - Archive Manager - Ownerless to O365

I know that to migrate to an O365 account, we need to map on UPN or SMTP address. 

is there any way though for me to map it to a separate non licensed account? basically I want to move my QAM archives to O365 but without any specific people. is that possible?

I mean can I create a dummy account without a license and map an ownerless archive to that account? maybe in Manual Mapping?

I think im answering my own question but I just want to know if anyone else has done it