Save Leyte for me as a place to begin with.
My method:
Open the field in in Mission Builder and place the same objects over the ones on the field. Save them as a layout.
Open the airfield bgl with bglana and save as a .sca file and at the end of the text you will see all of the .api call outs. Delete them and recompile to a .bgl with SCASM which will give you Chris’s original field without the .api objects.
Replace the old airfield.bgl with your new one and open in Mission builder. Add your layout and create the .gsl. Et voila
My method:
Open the field in in Mission Builder and place the same objects over the ones on the field. Save them as a layout.
Open the airfield bgl with bglana and save as a .sca file and at the end of the text you will see all of the .api call outs. Delete them and recompile to a .bgl with SCASM which will give you Chris’s original field without the .api objects.
Replace the old airfield.bgl with your new one and open in Mission builder. Add your layout and create the .gsl. Et voila