Does anyone know if it is possible to download favourites from the hard disk based 2013 RRS sat nav, say, to a USB stick and upload to another car (MY16 RRS in my case)?

I downloaded various POIs from computer to a USB stick and uploaded to my car which was great. I am surprised an import/export feature for favourites doesn't exist (or at least I haven't found it). Current: Volvo XC90 T8 Inscription Pro PHEV with some optionals on top
Gone: MY16 RRS2 3.0 SDV6 Autobiography Dynamic, Carpathian Grey & Santorini Black Sliding Pano/Ebony & Ivory 2 Tone
Gone: MY13 RRS 3.0 SDV6 HSE Black Edition, Orkney Grey/Ivory
Gone: MY09 RRS 2.7 TDV6 HSE, Santorini Black/Almond