20. The expert from IC introduced GRSP-64-32 which explained that for the forthcoming entry into force of “Phase 3” of UN Regulation No. 129 (belted Enhanced Child Restraint Systems (ECRS)), all groups and categories except Group III on forward-facing non-integral CRS would be covered. Accordingly, he explained that belted CRS could be still approved according to UN Regulation No. 44 for an undefined period. He therefore proposed to phase out this category of CRS (ECE/TRANS/WP.29/GRSP/2018/26). The proposal received comments on the transitional provisions and GRSP considered GRSP-64-35-Rev.1. Finally, GRSP adopted ECE/TRANS/WP.29/GRSP/2018/26, as amended by Annex IV to the session report, and requested the secretariat to submit it as Supplement 16 to the 04 series of amendments to UN Regulation No.44, for consideration and vote at the June 2019 sessions of WP.29 and AC.1.