What tool did you use to export the data?

[Veniman8000]

I am referring to extracting the data in old versions of the game, as this may have a relevant role for emulating older versions of the game, by having export data available for various things.

[IhToN]

I used the API that the official Warframe Mobile app was using to retrieve the data information, you can get more details on the python script that was updating the different json files:
https://github.com/IhToN/warframe-item-data/blob/master/tools/update_item_data.py

Unfortunately, it seems such API is no longer available :(

[Veniman8000]

Ye, they mostly did shut it down at some point if I remember correctly. A community project was made (Warframe Public Export Plus), which is more accurate, information complete, but doesn't apply to really old Warframe versions unfortunately