What does Load From Existing Batch on the Fields tab do?
This option loads all fields and defaults that have been selected in an existing batch (from the Fields and Defaults tabs of Batch Setup). This can save time when creating a new batch with the same fields that have been used in a previous batch.
Note: Load From Existing Batch is only available when creating a new batch. If the batch already has information entered into the batch, the Load from Existing Batch field is disabled.