You'll need to enable Advanced Options under Settings before some of the relevant fields are visible:
1. Set the reference DRS to an unmodified copy of the drs you'd like to extract from.
2. Ensure the Output Format is set to CD files
3. Uncheck Install conversions.
4. Click the Convert Input File... button, then select the modified drs.
5. Wait for the assorted popups to finish, then ensure the Add to existing output is checked
6. Set the reference to the next drs you'd like to extract from
7. Click the Convert Input File... button, then select the modified drs.
8. Repeat 6 and 7 for any more drs files that have been modified.
Once you're finished there will be a gamedata_x1_p1 in the Genie Converter directory with all modified files added to it.
AoK: Realms
Adds Armenians, Balts, Bamars, Bohemians, Bulgars, Burgundians, Chimus, Dutch, Helvetians, Jurchens, Khmers, Malays, Mandinkas, Moors, Muisca, Tamils, Tufans, Turcomans, and Viets
Proteus and Genie Converter - AKX installers for modern times