Dottie,
From what you have described, my guess is that it sounds like you may have deleted the screen before you removed all of the links to it. To go forward with this, it may be best to book paid support to look into this issue. We can continue to try and diagnose the issue through the forums as best we can, but without seeing your screens, it will be difficult to get a quick solution.
In the future, when you want to revert back, it is best to go to Advanced Screen Properties and select the "Click to remove" option in step 1. You'll see the replaced screen is listed at the bottom. You can then copy that screen and replace tab links again to revert back. Since you've deleted the screen, this may not be an option at this point.
- Adam