Ascendex main CSV history file (Order History) imports okay.
However, please can you also suppor the Staking history (under Investment History).
Investment History, Staking
Investment History & Reward History exports.
Hi @andwan0,
Thank you for posting about this issue and my apologies for the extreme delay to respond to this message!
Would you please connect with our support team, if you haven’t already, and share this? We would love to ensure this is on the roadmap for our dev team. It’s key to have this importer include all transaction types to save from missing purchase errors.
Thank you so much for shining a light on this, andwan. It greatly helps to expedite a fix and create an easy path for others once it’s been confirmed as complete. 
Have an awesome day!