Move or copy them back from Dropbox into their original locations.
If you chose to start over not need to erase the catalog. Just start a New catalog by going to the File menu item and selecting New Catalog.
But I need to know how on earth did you move All your images to Dropbox accidentally? That is something that doesn't just happen by accident.
I took my man folder and put it in the Dropbox folder, thinking it would copy it...
So when I start a new catalog, what happens to the old? Just leve it?
Thankyou so much for your time ☺
You can delete it or leave it that is up to you.