NZX historical data unavailable. Around 2003 ^NZ40 changed to ^NZ50, but old data for ^NZ40 inacessible
I would like to access NZX (New Zealand) gross index data prior to 2003. The problem appears to be related to the main index changing from ^NZ40 to ^NZ50 at that time. While ^NZ40 is still a valid ticker, weirdly only 5 day data is available. Ideally I would like to see some kind of adjusted data when I look at ^NZ50 max time frame, but being able to get historical data for ^NZ40 would be ok too.