I can't see the image you posted. How large are your databases? You may need to alter the tables to remove those columns, update, and then recreate them. Since they aren't part of the database as PT4 expects it to be, it's not something our updater can necessarily handle.
Depending on how much work that is it might be easier for you to just create a new 4.11 database, reimport your data, then create your extra column as you need.
4.11 will have much better performance with custom stats that are cached -- they will be just as fast as built in stats.
