Return a item that dropped below $100 required for promo, return promo?

former-member · 2014-11-11T16:58:33.000Z

So for October, I order couple of items, one for 80, which is enough for free shipping by itself, the other one is 40. For the $40 item, which is the star wars advent calendar, I'm thinking about returning it and change it to city advent calendar. The question is if I return and purchase the city advent, will Lego require me to return the free Toy Workshop that they were given out for free in October as well? if so, I may just purchase another City and sell the Star Wars Advent Calendar.