This is normal. And, for the benefit of the “gamed numbers” crowd, we just saw the same thing happen in manufacturing. Revisions are part of the process.
And, for those of you just glancing down at the right side of chart and wondering about the spike to high side in blue line, look over on the left. You will notice this happening in each of the last two expansions.
Of greater moment, is the fact that we now have both lines on this chart back above zero. Which is where we see them in front of the last two business cycle peaks. But not at the levels we saw in front of the last two business cycle peaks.