Test Case Count next to Test Set is not getting updated while using soap api

I am creating a test case using soap api and then linking it to a test set. But the number of test cases is not shown next to test set name in this scenario.

I have done a analysis on this issue like there is a “COUNT_NOT_RUN” field in the “TST_TEST_SET” table. Count of test cases next to Test Set is getting the value from this field. When I am doing using soap api the value of this field is not getting updated automatically. I have tried to loop through all the test sets and use the method testSet.setCountNotRun(int value) to set the value explicitly. But still not working. 

I guess there should be some client side validation to counter this issue. Could you please check what is the issue here or let me know if I am doing anything differently.

Thanks,

Abhijit