The Cascading Select field type in JIRA is incompatible with the new Zendesk Integration for JIRA. For this reason we are considering a change back to a single select field. This would affect 183K issues. I've read that the data is different from field to field, and it sounds like its not possible to copy the values via "Built-in Script" from ScriptRunner. Aside from standard bulk-update or workflow post-functions, is there some other way we can programmatically update sets of issues based on the cascading select value, without registering in the issue's change log?