On the Batch Create Tasks Page, if the user toggles the module and then goes back to Ditto, the Ditto option disappears from the drop-down selection under story. 

Page: Project>Batch Create Tasks 

Reproduction: On Batch Create Tasks, toggle the module drop down and select a random option. Toggle the drop down again and go back to default. Toggle the drop down on story, the Ditto option will not be there.