OK, I will try and make this as clear cut as possible. I had come to the conclusion that Categories (and Pages for that matter) must all match in three places:
(1) The original section titled CATEGORIES where you actually set your categories
(2) On both sides of the MENU section (A) Where you select which ones you want in your Custom Menu and (2) In the Custom Menu itself.
I thought all my sections were matching. The PROBLEM, however, is that when I went to write a post and went to choose which categories to put the post under (in the drop down menu on the right in the Post section) it had several EXTRA categories that were not in the CATEGORIES section. Of course, that drop-down box did match the box of categories under Menus. BUT, I repeat, it did NOT match the categories where you actually insert and delete them!
In other words, there is no place I can delete those extra categories (The category DIRECT MAIL is repeated three times!) other than in the original Categories section ... except that those repeat categories are not there!
So, the big question is, how do I delete those repeat categories so they are not showing up every time I go to create a new post? It's very confusing because obviously I don't want to check DIRECT MAIL three times!
I hope I made my case clear enough. It's so hard to "tell" rather than show something like this. :)
The blog I need help with is jennikeast.wordpress.com.