The first time I exported a set of files, after having edited them, they came out as 6.46 GB, when I changed the naming and exported th enext time, the same files came out as 1.56 GB, there are no resizing options checked, any thoughts on how to get back to the original export fil
Well, you'd have to give us details about the photo, such as how you are exporting, what format you are exporting to, sharpening, etc.
Show us a screen capture of the Export dialog box (it might take 2 or 3 screen captures to show us all of it)
Also, are you 100% sure you didn't change anything? What are the number of pixels (width and height) of one of the photos in the first export? What are the number of pixels (width and height) of the EXACT SAME original image as exported in the 2nd export? Are these JPGs or something else?