Finding file path / file name to p12 on new computer

Hi, (Air As3 mobile app development question)

I copied all of my files from one computer to another. When I open up PUBLISH SETTINGS I see the old file path is there for the OUTPUT FILE: ~ However, not for the Certificate. The Certificate ALWAYS opens to the last one used and NOT the one I used years ago. So how can I find out what was the name of the Certificate I used years ago?  Again, because when I open a file I used years ago, in the Certificate pate it shows the last one used when Animate was opened, for example, if you used it two days ago, it would show that path and cert, and not the one from years ago.

I can not update my app in google play without this cert, but I can't find it cause I don't know the name.  There must be a way to find out what cert name was used when publishing an app.

Thanks