I do not think that Premiere Elements qualifies as an upgrade for Premiere Pro
For CS6 go to the second page at http://www.adobe.com/products/catalog/cs6._sl_id-contentfilter_sl_catalog_sl_software_sl_c reativesuite6.html?promoid=KFPMZ
When you click to buy, change from full to upgrade and then see what is listed as an upgrade qualifier
For the newer Cloud version, I don't think there IS an upgrade, only a Cloud subscription
I have a serial number for PE10 (I downloaded the software). How do I upgrade to Premiere pro?
You have 3 options: buy full version CS6, rent CS6 or rent CC.