Hi,
I am just solving an issue with Behaviours - I have a configured behaviour with appropriate mapping and everything goes well 
But when I try to read field Project, this field returns null in all cases (both on create issue form and other (edit etc.) issue form). Using of "underlyingIssue" is not a solution for me.
My script seems like this:
def projectFormField = getFieldById("project") as FormField
def project = projectFormField.getValue() as String // String or whatever... 
log.debug("Project: " + project) // returns: Project: null
log.debug("Project: " + projectFormField) // returns: Project: Form field ID: project, value: null Anybody knows? Thank you.