By the statement I highlighted it seem you are still misunderstanding the size issue of kma & kmh. There is no real size difference, I was only saying that if you import your zip files as KMA then you have
2 copies of the same song, 1 kma and still the original zip.
If you have all your existing files that you imported via disc as kma then keep them at that. (I hope you haven't deleted these from your hard drive)
Assuming you are using 5.05 and have not actually deleted your kma files from your hard drive follow this to get back to your original configuration.
Open the Build songs database dialog (Tools/Songs Database/Build Database) In the bottom left window below the add folders button where your folders are listed, Highlight the folder or folders containing your zip files then press the Exclude folders button, this will remove those folders from the rebuild but not delete any files from your hard drive.
Now make sure the folders containing all your original kma files are still in the list, you can see if any of the folders are empty by highlighting them and their contents will be displayed in the right hand panel.
Assuming all your kma files are still present press the rebuild button.
This should at least get you back to where you were before you tried importing the zips.
Let us know if this is successfull before continuing to try and import zip files. Then we will try and guide you on.