Thanks.
I have thought this was the case and have started over already. I just haven't changed what was in the PLC, just in case. I guess it's OK now to forget it.
The flash drive was in the computer when it got stolen. Someone walked into the company in broad daylight, picked up two notebooks and an iPhone, and walked out. All on video. We were barely out of eyesight.
On a side note, I'm building the project better this time from the start. It's going much faster this time too.