actually Im not sure what change was the ONE that finally made it work...
I believe its the XMP sidecar thing you mentioned on previous posts...
Suddenly, I saw a tinny arrow icon on LR thumbnails corners, I clicked it, and I was asked to synch the metadata, and voila!
Maybe I found the solution way before, but could not notice that I had to press this arrow in order to update the metadata in LR, which was changed by other application (PM).
Kirk, thank you so much for your patience on this matter, guiding me through the whole process.
Ricardo