Initial setting up the saved files can't be returned.
Assuming you're talking about Lightroom then you can simply select the images in the Develop module and click "Reset" to remove all your modifications, then export another set.
I think artjt is correct if we talk about returning to import settings of multiple images in one go .
- Lightroom Does have History Panel that can be used to Go back to your Original settings (that's why we call it Non Destructive Editing Product)
Select all images,Expand the History panel in Develop module and Click on the Import(very First last in History panel for your images)
Then Click on Export and export to your Desired location.I know it is slow but it does the job you are looking for.
Let us know if that helps
This is a Double post on the same subject from the same user. Please look at your other thread for the answer.