You should not have imported - now your catalogue has the newly-imported files, and the missing files that you previously edited. Slow down.
Now, have you a backup of the catalogue before you imported? If so, restore it. If not, remove the imported files - in the Catalog panel, they will probably be under Previous Import. And remember, remove, not delete - make sure you read each dialog box carefully. Do not use Folder Synchromize, and do not import - neither step gets you out of trouble. Again, slow down, take a backup of the catalogue, and resolve this calmly.
Once you are back to the position before you just imported, please go back to my previous questions. Are the photos showing an exclamation mark, and do their folders have question marks? What you should be able to do is click the exclamation mark, and point LR to where the missing photo now is. If the folders have question marks, you can right click the folder and choose Update Folder Location, pointing to where the folder now is - and this may prove quicker than fixing the photos' locations.