When create a sub-task, do not want to inherit fixVersion

Question

Now I create a sub-task, the fixVersion/s will inherit from parent issue.

I don't want this function.

There is no Behavior script control or workflow(postfunction).

How to write codes in Behavior or scripts?

Thanks in advance

Xiangwei Yu · Answer

Thanks for your response

Jira version is v6.4.4

Steven F Behnke · Answer

This jira issue should explain some of the history: 
https://jira.atlassian.com/browse/JSWSERVER-16018

What version of Jira and Jira Agile/Software are you using?