1. Go to Tools->Edit Batch Setup.
  2. Mark Batch is Recurring. This will allow all the information in the batch to be used/recommitted through another batch number.

If you only need to re-use the headers:
  1. Create a New batch
  2. Select the Fields Tab
  3. Click on Load from Existing Batch
  4. Type in the batch number of the batch that you wish to copy the batch headers from.
  5. Click on data Entry