I need to look at this more carefully. Since I was playing really badly on the front 9, I decided not to score the back 9 for score and shot 6 strokes better than the front 9. However, I did not hit any "practice" balls, but just played normally except that I assumed the score would not go into my handicap. Same goes for a few 42s that I scored. The better scores could also have been a results of less "pressure"?
Hopefully this is not sandbagging!
What rounds to record was discussed in this forum before. The gist I took away from it was that, once you start a round, you can't decide in the middle if you are going to record the score or not. If it started out as a practice round, don't record the result. If not, you must record it if you got at least 13 holes in.