Looks like I have solved the issue by changing line 222 in the postprocessor.
I was using "e" option. That is better with "b"
Now the generated code isCode:222. Arc center a=absolute, b=incremental, d=unsigned inc., e=radius? b
Code:G17 G3 X-15.371 Y11.168 Z-2.100 I-19.000 J.000 G17 G3 X19.000 Y.000 I15.371 J-11.168 F552. G17 G3 X-15.371 Y11.168 I-19.000 J.000