I am continuing to explore and compare the differences between 12c and 11g and noticed of course that the handling of the RPD upload is different.
I ran through a quick download/upload of the RPD and I noticed that the RPD does not seem to be backed up anymore?
In 11g, when I uploaded an RPD via the EM, if I went into the correct directory in 11g I could see RPD's that have auto incremented based on my uploads. So if worse comes to worse I could still go in this folder and pull up an old RPD.
In 12c, when I run the upload script I see that it updates the liverpd file - then it adds another incremented liverpd (liverpd.rpod_5)file, and keeps one previous RPD file (liverpd.rpd_4)for a total of 3 files.

I tried to download the older RPD file (liverpd.rpd_4) and open it but the password I was originally using does not work.
While not a huge thing, I was curious is there any way to open that one previous liverpd file?
I personally prefer to have a back up of the back up of the back up just in case of a disaster.
Or is this just how 12c is, where we can not access any of the RPD files in this folder UNLESS we use the RPD download/upload script?