Automatically turn off web posting on copied planbooks (please!!)

It is very frustrating to copy a planbook and have all of the lessons automatically populate into my class website. I ALWAYS make changes, and the dates are ALWAYS wrong, but they all automatically go into the class website. This creates confusion for the students and requires that I go through and individually click each card and turn off the website visibility - for an entire semester. This is a big frustration for me with the product (which I generally LOVE).

Thank you!