nope, that won't work for mint. As always, upgrading is not recommended, you should do a fresh install. An upgrade pack was made available for elyssa to felicia, it is likely that an upgrade pack will also be created to upgrade felicia to gloria. This will not be a perfect upgrade, you'll get something that is very like gloria, but not quite.
If you have a question that has been answered and solved, then please edit your original post and put a [SOLVED] at the end of your subject header
Hint - use a google search including the search term site:forums.linuxmint.com