No, you do not need to write the NCLEX-RN if you are a current licensee with BCCNM.
The NCLEX-RN is the entry to practice exam for your initial license in B.C. It is written by new applicants seeking their initial license who have not yet met the exam requirement for license with BCCNM. Reinstating applicants may also be required by the Deputy Registrar of Licensing to write the NCLEX-RN after considering the length of time since you passed the required exam for your initial license and your practice experience.