PSE 9 and 5 will not import - says the file already exists in the catalog !

Question

I've already wasted 2 days looking for answers to this. When someone buys this program, at least half of the price is paying for the database in the Organizer - yet even John Ellis himself, who seems to know more than anyone about it, has gone to Lightroom. This is bad coding!!!
Upgraded from 5 to 9. If you read my previous posts, this took 2 days too, and phone help from a tech, because it would not install in my XP computer. It did upgrade the Organizer from 5, although many of the symbols are unusable and don't work to help me identify my tags. However, now I see that neither 5 nor 9 is able to look at a file and display thumbnails that are in it.
I move files around a lot for my business. Any half-way good database should be able to find the missing files, and also add any new images. Say I have 10 images in file A, then add 2 more to make 12. It can't see the added images! Says can't import, the file already exists in the catalog.
I tried: updating thumbnails, recover, repair, in both 5 and 9 - nothing works. to import the images that I can SEE in these folders! I read here  that it will not import files if the same name is somewhere else. That alone is a problem.  But I think it's more than that: even if the file used to be in another folder, folder B, it won't recognize that it's in folder A now!
Since PSE9 uses sql db, shouldn't that be better than 5 and be able to do simple tasks like this?
Any advice or similar experiences eagerly welcomed.

Answer 1

Thank you for replying, dj paiqe.
Do you mean the first little section that says photos may not be displaying? Yes, those just reveal hidden photos and are very basic. I did them.
I guess we disagree about databases and what they are designed to do, or maybe I didn't explain this well.
I did not move the images outside of the catalog: I move them to various folders, all already imported WITHIN the catalog, as I send them to various editors. (these are all drawings, not photos, and I do this professionally, so it needs to work).
Folder A and Folder B and Folder C have already been imported into the catalog. So if I move 2 images from folder B into folder A, the Organizer is simply lost, says image already exists, and everything is totally screwed up, as the image is no longer in folder B, and it can't find it in folder A!!! The problem is, unless I memorize the image name, say Image 9, I can't tell it to reconnect, as there is no longer an image in front of me! So there are 2 images, without names, now nowhere to be found. Inefficient, to say the least.
I've never tried Lightroom or Filemaker, but I cannot believe that they would lose data like this. I think it's the Folder coding that's not working in PSE, and I wanted this to work so badly!!!!!
I am willing to do it the PSE way, since you now have captions, keywords, etc, and it is a very powerful database, when it works. I understand that one is supposed to move images within the Organizer, obviously. But now many images are disconnected. I could start all over importing, but is there any way to do that without losing tags and categories?