2015 USTA League bump percentages by level, 4.0 men and women - Interesting tennis league stats

This post continues the thread of analyzing the 2015 USTA League year-end bumps up and down.  I've already looked at bump up/down percentages by section and overall, as well as for the 3.0 men and women and 3.5 women and men, now I move on to the 4.0 men and women.

Other than Caribbean again, the men look pretty normal with a few more bumps up than down.

The women is pretty interesting though with nearly every section having more bumps down than up!  Is this perhaps an adjustment in response to bumping too many up last year?  If so, was it a natural adjustment because those players couldn't do well at 4.0 or was there an adjustment the USTA did?