Within the deck builder, items inherited from your template card will start with a grey outline and have a padlock icon on the corner when they are selected. When you press "backspace" to delete a template object, you will receive a warning in your browser.
If you decide to delete an object and want it back, you can use the "undo" feature to go back.
You can use ctrl + Z or cmd + Z as a keyboard shortcut to undo.
If it's too late to undo the change, the easiest fix is to create a new card, copy your content from the card missing the template items, and then delete that card.
If you have any further questions, please feel free to email us at help@boomlearning.com or call us at (833) WOW-BOOM. A real human will happily help you!