Hi Brendan,
Thank you for this astute observation and for thoroughly investigating this issue! Your research was a huge help when determining how to handle this situation.
Unfortunately, there were no 100% perfect solutions, but I landed on one that will hopefully be the most beneficial. I migrated all the content from the Vaio FS series VGRFS640 page to the [link|https://www.ifixit.com/Device/Sony_VAIO_PCG-7A2L|Sony VAIO PCG-7A2L] page. I updated all of the naming conventions on the device page and corresponding guides to ***Sony Vaio VGN-FS640***. The only caveat is that I can’t change the [link|https://www.ifixit.com/Device/Sony_VAIO_PCG-7A2L|URL on this page] without resetting the page stats and author history. Since this page has accumulated over 44,000 views, it’s proven to be useful, so I’d rather not start a new page from scratch. However, there may be a possibility in the future that we can redirect this page to a new one with the correct URL without losing page stats. In the meantime, I hope this solution suffices.
Thanks again for your help!
-Kristen