While testing my modpack I have noticed when I complete a task the items crafted/retrieved are deleted if I press the "Detect/Submit" button. If BQ detects the item, then the item is not deleted.

BQ v 3.5.279

I found the issue. I had set consume to true, which caused the items to be "consumed" when I pressed the "Detect/Submit" button. By setting to false the reward was collected without deleting the task item.

  "consume:1": 0,