Does Dawn Phenomenon provide ANY measure of overall control?

An obvious question? Perhaps … yet if it means your BGs are elevated for what? 2 hr of 24, how much does it affect A1c, and whether it does or not, how much does it matter?

Does increasing DP indicate diminishing control?

ETA: will search books and PubMed this week, but want to get YOUR opinions, first. Will summarize findings if possible!