DBA amounts 'lost' when processing Interim checks during regular pay cycle

Has anyone else seen this issue?  We are on E1 8.12 and process payroll weekly.  We merge multiple interim checks/voids into the weekly pay cycle for processing.  Over the past year we have sporadically had interim checks ‘loose’ certain DBAs amounts (usually union dues) when that check is merged in pre-payroll.  This causes the journal entries produced to be out of balance by the amount of the ‘lost’ DBA amounts.  When reviewing the interim check, using the pay cycle Payment Review, the DBAs show up on the pay stub but not on the DBA Review form.  Usually the employee has both an Iterim check and a regular paycheck being processed in the pay cycle.