Problem with Claims Expense when employee is submitting expenses for the prior month.

Can't adjust date on claims expenses or I get an error. I pay reimbursements through payroll so that's the first issue. I have to manually put in the reimbursement amount when running payroll and then do a journal entry to reverse the totals as in my payroll …it goes to Reimbursements but the expense claims goes to another expense account. My second and more urgent issue is my employees sometime submit claims that are from a prior month. Say I am running Nov 15 payroll and they submit an expense reimbursement dated 9/3/2. I can’t have the entry to go to the prior closed month as those books that have been submitted and we can’t change. Does anyone else have this issue and do you have a workaround? Thanks