How can I export a folder of images using the original file data?

Question

I have edited my images within the "Develop" mode, but now need to export as jpg's using those settings (note: some are now B&W) and then I also need to process as jpg's using the original settings (color), so my client has all the original color files as well. My files were all shot in the Nikon RAW format, but I can't figure out how to export all the images without using the develop adjustments I have made to each file, including having changed many to B&W. Is there a way to do this? Note that I also don't want to lose all of my adjustments, so can't just reset them all, if that's even an option.

Answer 1

2) Now I need to export all the images that have at least 2 stars
(around 1200), so I can give the client a folder of "originals." This
way, they can view images that didn't make the final edit (album) and
will also be able to print an image that I converted to B&W for
their album in color.
First of all, I think making a backup of your directory (using Explorer or Finder or whatever) might be prudent before you start this little experiment!
So, all of your originals are in one folder, and ~1200 of those are 2-star and 384 are 5-star and have edits, correct?
What might be easiest (although not the most effecient) is to just click on the folder, then use the Library Filter to select everything that's 2 stars and above. This will select all the images that need exporting.
Then follow Jao's instructions for creating a new collection and removing the edits. Make SURE you create your new collection with VIRTUAL COPIES or you're going to wipe out everything you've done. 
Your new collection should then  have virtual copies of everything 2-star and above, in their original unadulterated state. You can then export to JPG.
I think from now on I will export those files with 2 stars first, then narrow down the the final 384 and make adjustments
You could always create a collection of your "keepers" (2-stars and above). Then, for every image you want to edit, be sure to edit the virtual copy  and then put it in a subcollection under the main collection.
That way you kind of have a history of what you did, and you can export (or re-export) at any time. You don't even really need to keep the exported JPGs around, since you can always re-export.
Scott Kelby has a Lightroom book that illustrates this kind of workflow much better than I can. I highly recommend it.