EBU Single Rulebook Q&A 17 October 2016 2016_2946 Model selection/use in context of a pending application of a significant model change

Should an institution that expects to receive approval to use a new internal market risk model following the remittance of IMVs but prior to the remittance of the risk measures submit IMVs using the old model or new? Our competent authority has indicated that we will receive approval to use our new model within Q4 2016. We plan to continue to run both models in parallel only until year-end 2016.