When executing PGM=EZTCOM, with NEWFUNC = N, reports showed "CA Easytrieve 11.X" in the title line not "CA Easytrieve 11.x C".
When executing EZT or EZTCOM, you get strictly r11.x modules.
EZTPA00 contains the logic to determine whether the 6.4 or r11.x compiler is called based on the NEWFUNC option.
Executing EZT or EZTCOM instead of executing EZTPA00 is only a hard-coded EZT r11.x job. It takes NEWFUNC out of the picture.