I just got through submitting a half marathon course with segments included from 5 measurement dates over 4 years. My primary certifier justifiably requests a spreadsheet when I have to do stuff like that. Everything in my BC & CM pdf's was copied and pasted out of an xls. I made frequent mistakes before I started doing it that way.
I know it has been discussed before but here in 2017: How close are we to changing over to spreadsheet submissions for courses? How many of the certifiers reading this still actually go through the line by line information in the BC & CM forms? Why can't we just put all that and the App in one spreadsheet? It self checks to a large extent and it ought to save everybody a ton of time.