Hi José, have a look at this post on the Panoramio help forum.
These are the key points for your question:
- An easy-to-use migration flow to bring your full resolution Panoramio photos, metadata, and viewcounts into Views. If you’ve already exported Panoramio photos to Google+, you may have duplicates, but our album naming schema should make this easy for you to manage.
- We will migrate your viewcounts!
- For now, we suggest leaving your Panoramio photos where they are, but trying out Views for some new photos. When the migration flow is enabled, you’ll avoid more duplication and your viewcounts will be retained.
You don't need to do anything yet, there will be a migration tool made available when the time comes, but we don't yet know when that will be.
- If you choose, your photos that remain on Panoramio un-migrated will continue to be seen on Google Earth and Google Maps (far beyond the migration) if they are associated with a Google account.