Z4 code missing in my program

There was Z4 code in my cnc plasma programs generated using the sheetcam. But now it’s ball gone. I’m attaching the screenshots for reference. Request your help for a solution . I’m unable to attach the screenshots here, showing its too large. I can mail or send through whatsapp or signal.

What machine controller are you using? What post processor are you using? This sounds like you may have changed your post processor.