I think I'd just copy/over-write as opposed to erasing the original older disk
But that's just me
Erasing it may lose Bonus material from a given year.

/just a thought
Quote:
... so what I plan to do is to erase what is on one of my old BIAB 2TB portable hard drives ...


Example:
If your previous version included a +Pak or such (only included in that year's version), you may inadvertently lose them.



I do not work here, but the benefits are still awesome
Make your sound your own!