Date Edit Code for the End of the Month

Hi Community!

I'm at a loss here. I have created a custom date edit code 'M' to use the last day of the month of Termination Date (DT). I added enrollment parameters to use this date edit code on terminated employees enrollments to stop using the Batch Enrollment UBE R083800. Problem is when the plans DBAs stop, the stop date is one day prior to the end of the month. For example if an employee is termed in September, the stop date for the enrollment should be 09/30, not 09/29. I am attaching a word document to