As I have mentioned elsewhere, I generally write Blu Ray output to a folder then burn from that folder onto a re-writable BD disc to check everything is OK before finally writing from the folder to a standard BD disc (at >UK£5 each that is cerainly a worthwhile process IMHO).
Well, yesterday, after hours of transcoding in Encore the disc was written, not to a folder but directly to my re-writable BD disc. My fault entirely as I forgot to adjust the settings in Encore.
I tested the re-writable as usual on my BD player. All was fine so I am thinking that to get the content onto the delivery BD disc I would have to repeat the transcode process again.
Rather than spend those hours transcoding again I thought 'Why not copy the BD disc?'
Now I know that copying commercial BDs is difficult if not bordering on the impossible. Anyhow, to cut a long story short I copied the BDMV and Certificate directories from the BD to my hard drive then used ImgBurn to write those files to a blank BD. Worked a treat, so hours of re-transcoding saved.