I'm sorry if my original post was confusing. I didn't "want"my store moved to the main domain. I misunderstood the tutorial to say that I "needed" to make a test store in a totally different directory to see of the upgrade would work before I could apply it to the real store.

Let's simplify this. I would like to start over...completely.

I am in the process of totally deleting the new store I made. I will keep the copy of my database with the new name and just have it as a backup.

My store is still in the sub-domain where it has always been. It still works, with a few flaws that I hope will be fixed in the upgrade. I have taken it offline, but I can access it from my computer.

So, assuming I have done nothing, maybe I can follow your instructions rather than the complex list of things to change in the tutorial.

...And thank you again for your patience with me.