If you want to create a scenario for a mod contains new units/technologies, their IDs may overwrite original AoC unit IDs, so it will be very difficult to find the required units. But if you use this xml file, you can search the ID of new units/technologies in Genie Editor, and you can select that unit/technology in Trigger Studio by its constant ID.
To get ID based Trigger Studio, just download data_aok.xml, and overwrite original data_aok.xml (first make a backup).
To get ID based Trigger Studio, just download data_aok.xml, and overwrite original data_aok.xml (first make a backup).