Can add-a-line promo phone be swapped with existing line phone?
Enthusiast - Level 2

I am adding 2 lines to my account. I plan to keep both lines. But I’d like to use phones we already have on the 2 new lines and put the promo phones on existing lines. Am I allowed to do that and keep the promotion? If so, can I go straight to activating the phones on the lines I ultimately want them to service? (I’ve gotten multiple answers through chat …)