That pick is lottery protected, isn't it? 
You're thinking of the Clippers pick we got from Memphis.
The protections on the Memphis pick are:
2019 first round draft pick from Memphis
Memphis' 1st round pick to Boston protected for selections 1-8 in 2019 (conveyable if Memphis conveys a 1st round pick to Denver in 2017) and 1-6 in 2020 (conveyable if Memphis has conveyed a 1st round pick to Denver by 2018) and unprotected in 2021 [Boston-Memphis-New Orleans, 1/12/2015]