You need to explain better what you did. You moved a recording? How?
If you don't know which recording to open, how do you expect someone else who can't see your screen and doesn't know what exactly you did, to be able to tell you?
Give us some details and screen shots of your files.
I don't have Sam Prox X. I was assuming that you were using Samplitude Music Studio.
Are you looking for the recording or the Sam project file?
When you record, the recording is a wave file that is saved on your hard disk, so look for a file that finishes with ".wav."
If you want the project file, SMS creates back up files that have the following structure: 2014-10-11_BAK.VIP, or filename_BAK.VIP. Look for this type of structure.