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Hi, From your question I have concluded that you are worrying about QS after changing final URL so here is answer from Google. "Quality score is primarily based on predicted CTR, ad relevance and landing page experience. Creating a new ad (with new Ad ID) with the same keyword, creative, landing page and device would therefore not affect the quality score." You can use AdWords editor to complete the upgrade. "Stats history are not lost because the removed ads are still in the adgroup. There is no impact on reporting at ad group or higher level. The only impact would be when looking at the ad ID level, you will now have stats for 2 ad IDs (one for the past, one for the new)." You can also watch this video @ https://www.youtube.com/watch?v=IQBR_LT7pS4 it is about upgrading URL from destination URLs to Final URL but you will get answer of all your question. Hope this helps. Thanks