Why did this happen?

You are moving a workflow from your staging Jira instance to production. On importing the workflow, Jira notifies you that the post-functions will not be imported. Staging Jira is on version 6.4 and production Jira is on version 6.3.

Why did this happen?
A . The apps installed on staging are not the same as on production.
B . The production and staging instances are using different versions of Jira.
C . You exported the workflow as XML instead of JW
E . Custom post-functions are not included in workflow export.

Answer: D

Explanation:

Reference: https://confluence.atlassian.com/adminjiracloud/importing-and-exporting-issue-workflows962965084.html