You'd have thought implementing DDP in CDA would have been a trivial step as it's primary a simple file format encapsulating cue-sheet and WAV data (as far as I can see).
A feature-request for DDP has been requested for years and years, but given the recent CDA update history (ha ha) cannot imagine it ever happening ;-(
Yes Geoff you are correct; - I prepare my masters in CDArch, Save As WAV file, import that into DDPCreator and finish the job there because that is what the factory wants; editing/timing etc. is cumbersome in DDPCreator; all be much easier in ONE application.