Thanks. As I understand it, Picasa is non-destructive unless you save the file. So, since I've just been editing/developing (cropping, fill light, shadows etc.) in Picasa and then exporting I should be alright and not be losing anything to the original file. Am I correct, here?
So, I assume that it will be ok to "reset" the jpegs that I have edited/developed in Picasa without a loss and have the cleanest possible images to import into LR.
From my reading, there are several links saying that Picasa is non-destructive unless you save.
Non-destructive photo editing » Picasa Geeks
Andrew