Once a Bulk Donation (created using Bulk Donation Entry) has been Processed, you can no longer edit the Batch. Instead, you will need to locate the Opportunity or Recurring Donation that was created, and edit that record instead.
1. Go to 'bulk donations' tab and search for the batch you want to edit the Opportunities
2. After choosing the batch, go to 'related' tab then click view all under 'bulk donation items'
3. Choose which Bulk Donation Item corresponding to an Opportunity/Recurring Donation you want to edit.
4. Click the Edit button.
5. Edit the necessary information you want then click save.