To upgrade to v11...
1. Get v11
2. Get a license for v11
3. Install v11
4. Upgrade a COPY of the existing schema
5. Create a TEST domain and project in the existing production system
6. Deactivate it, run the Verify and Repair on the test project in v11 (this preps the project by adding tables to the project.)
7. Run the upgrade option located in the Verify and Repair area.
8. If all goes well, it will be successful, repeat the same process for all the other projects. (you don't have to create a new domain and project each time.)
9. Test, test, test to ensure everything is good.
10. Provide your users with the new URL (if there is one)
11. Sit back, pop open your favorite beverage of choice and celebrate your awesomeness!