I have an Kodiaq imported from New Zealand and before I bought it I put the VIN into a vehicle history check website called Car Jam to make sure it had no nasty history. Costs very little . Its the NZ/Australia version of the UK's HPI check. When I checked mine it even gave me the NZ registration number issued to it.
Mine sounds like the same Spec as yours and all parts are compatible but you'll need the main dealer to re-program the Columbus system. Mine was programmed to NZ so if you looked at the UK it would have no street names but then if you zoomed in over NZ it had all the detail and even had the last owners address in it.
I'm more than happy with mine but the reality is that the dealer should have told you it was an import and should't be same price as UK car- Skoda might not honour the main dealer warranty either.