Comment 10 for bug 1362743

Tested "Replace Barcodes" function. It successfully prevents duplicate barcodes in all the scenarios described above with the following exceptions as reported in separate bugs:
Bug #1890498 (reported by Elaine)
Bug #1891961 (I added today for one specific serial vs non-serial instance)

I'm signing off on this one as it fixes previously reported duplicate barcode issues. New issues discovered are on new bugs.

I have tested this code and consent to signing off on it with my name, jweston, <email address hidden>