Where are original files kept after sample rate conversion?

I have had the need to convert some of my projects from 96K to 48K. When performing this operation, Cubase asks if I want to keep the original material or not. I say Keep! I would now like to find these original files, but they do not appear to be anywhere within the project folder. Does anyone have any clues as to how to retrieve these files?

Thanks in advance

They stay where they were before conversion.

If you have an old version of project file (.cpr) from before the conversion then you can open that and look in the pool to find where they were.