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0e1f616
(Get the code!)
My assumption is that you would not check the box if your barcodes were "invalid" even if you have a mix of valid and invalid ones since the original purpose of the checkbox was to prevent scanning errors. Which were common with the scanners we had at the time.
FYI: I did not have to reload the page after unchecking the box. I was able to reenter the barcode and save.