Threads from slaves not captured in the JTL files in a distributed test

In a distributed test with a thread group having 100 threads and 3 slaves. I see that in the test it generated 300 threads to execute the test as the thread group is executed by each of the slaves. However, when I capture the results using a JTL, it only reports 100 active threads through the test duration. Is it an issue with the JTL or is there some configuration that we need to do to get the results properly?