Cakewalk ProAudio 9.3 saves a project as a single file - it's called a bundle and was a proprietary zip style thing. It ONLY did it upon request and that was also a LONG time ago.
There were sensitivity issues with Bundles & the same version of Pro Audio that created it versus earlier or later versions. I was glad to move on to Reaper.
I did try RealBand but as it was neither logical or intuitive to use FOR ME I didn't bother getting into it in details.


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe