Despite the amendments and revocations made by these Regulations, regulations 3 and 7 to 18 of the pre-exit 2009 GB Regulations continue, on and after F1IP completion day, to have effect in relation to a special negotiating body reconvened under regulation 17 (decision not to open, or to terminate, negotiations) of the 2009 GB Regulations, as appropriate and practicable and subject to the modifications in regulation 149.