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