FS_PEACCRL AP Period End Accrual Reversal Has Incorrect Date - Is 1st of current month instead of 1s

The AP Period End Accrual process FS_PEACCRL was run with an Accounting date of 12/31/13.  The Accruals were created correctly with a journal date of 12/31/2013.  The Accrual Reversals were created with a date of 12/1/2013 instead of 1/1/2014. 

Any ideas as to why this would occur?

The accrual ran on 1/1/2014.  The AP Open Period was 1/1/14 to 1/31/14.  The GL Open Period was 12/1/2013 to 1/31/2014.