Change to Budget Definition not Reflected in Budget Overview

Our Fiscal Year ends June 30th and we have several Business units that are changing their operating budget definition.  I'm finding that the Budget Overview does not reflect the changes.  For example, one BU removed the Program ChartField as an optional ChartField and added the Operating Unit as optional for the 2018 Budget Period that begins 7/1/2017.  They have added their 2018 Operating Budget but are getting errors on some transactions.  I usually look at the Budget Overview to see if they have budgets set up correctly.  However, the definition for 2017 defaults the old definition and does not update