Hello @jefrii
the continuous delivery is similar to basic delivery, which is not commonly used. It allows you to proof the delivery directly when you open it. If you have custom target data created within the workflow, I would recommend copying the template and using the delivery activity that offers options to switch between proof and prepare-and-send modes.
Similarly, with the 'recurring' option, you don't have to duplicate the template; you can simply use the same template in proof mode.
Marcel