How to update the ethnicity/ancestry composition with new data?
Follow these steps to update your ethnicity/ancestry composition with new data if you have already added ancestry composition data before
Navigate to your settings by clicking on your profile picture/circle with your initials at the top of the screen.
Click on the "23andMe Ancestry Composition" option
Click on the "Import .csv or .zip file" button. You will be prompted to locate the ancestry_composition file. If you have just recently downloaded the file, it should be in your "downloads" folder by default.
Once you have selected the file, the file will be imported. Once the file is successfully imported, your ethnicity/ancestry composition should be updated and you should see the following prompt.