actually - I just found out on another thread that perhaps "file path" was never on the information panel anyway. I wonder if I am confusing it with the info panel I see in iphoto library Manager.
And I just hovered my mouse over the "at the beach" file name in the information panel, and discovered the origianal file name showed up. And if you hover your mouse of the date, you see "taken, modified and and imported".
Still wish I could see the file path, but now wondering if I ever did in iPhoto. But hope this reply of my own helps others that may be wondering where some of the stuff went.