I accidentally turned on an option for LR to convert my raw files to DNG when importing. Can't find
how I did it. I want to reverse this action. How?
You cannot convert the DNG files back to the original proprietary raw format, but that's not a problem, they still retain all the original raw data.
To reset the Import function-
Change the selection above the thumbnail window to "Copy" -not 'Copy as DNG"
Do not leave it like this-
Retrieving data ...