Thanks again for your help, Jim!
I realized that I was using an outbound SMAT message rather than the inbound, so that skewed my testing results to some degree. Jim also noticed that the data I was trying to remove was in multiple fields so he suggested that I use a pathcopy instead of a copy to null the entire field and subfields. I was not aware that you could use a pathcopy for a field, per se. I thought you could only use pathcopy to manipulate an entire segment. I learned something new. Actually, a few things 🙂
