Cannot Save Voucher - Accounting Date Not in Open Period

Financials 9.1

• We have vouchers with Match Exception or Recycle that are not resolved when we Close AP Periods, so when correcting the voucher after we close we cannot save without chnaning the Accounting Date.  Is there a way we can save vouchers wihout changing the accounting date? We only have one Period open at a time.  Also, when we Open the AP Period for the new month, the GL period is still open for the previous period only.
• We close AP 2 days prior to calendar end date.  During those last 2 days when we enter voucher,s the Accounting date is defaulted to the