Undo "never remember" Login Info

I had entered my username and password for a few sites and didn't want safari to remember so I clicked "never remember" and now I would like to reverse that decision.

I am using the current OS 10.8.2 and I have looked under the Passwords tab in Safari Preferances and there is no placeholder for sites that I have declined to remember login info for. I have also looked through the keychain access and didn't find anything either.

So far the only action seems to be to completly reset Safari or the Keychain, but that seems silly for something this simple.

Regards

DrZ