Thanks to ongoing discussions with you, our users, and "behind-the-scenes" discussions with Stephen Kay and the team it has been agreed upon.
Now... please don't keep asking, "Is it done yet?", OK?

For now you can move to V2 and wait a bit, or you can move to V2 and then load your old PCG file and use your Songs and Combis fine, you just won't be listening to or using the new PCM.
You could also move to V2, load you old PCG file and then still load the EX-PCM-01/02 data and just load the User-E Programs and Combis from within the new V2 preload data.
So there really is no need to avoid trying V2, and again, DO NOT try to downgrade from V2 back to 1.x.
Regards,
Jerry