Hi Lynn:

Look at the "Post" menu on the main screen of the GL module. You should see an Unpost option (if you don't, that option needs to be enabled in the Company Profile).

Click on that option and then specify the batch number. The process will be quick (as long as you are running a reasonably current version). Then you can edit the batch and change the Periods as you wish. Then re-post the batch.

Softrak has a YouTube channel and there are 27 videos specifically on GL functions. The average length is 5 minutes so they are quick but contain a lot of information. The list of 27 is on the right-hand side in the black box. See Softrak GL videos