Is it possible to edit a transaction in Sage BusinessWorks 50 Accounting version 2011 SP5?

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is it possible to edit a transaction in Sage BusinessWorks 50 Accounting version 2011 SP5?  I am doing some forensic accounting and am finding many AP, cash and AR transactions were posted in the system incorrectly.  I do not want to do a journal entry but would prefer to fix the actual payment (i.e. check, cash transaction) in Sage so check is correct and I can reconcile.  I can't find any way in this system to edit an old transaction or even get into the transaction and see what happened.  Thanks!