Plans should allow an ability to prevent some fields from being updated.

For example- We have a field like "Due date" which cannot be updated in Jira work item layout. The same field however, can be updated within Plans.

Ideally Jira Advanced Roadmap Plan should let the field remain non-editable in Plans too. As there is a chance someone can make an update within the Plan and save the changes thereby updating the actual due date value in the Jira work item layout.

The field should remain non-editable in Plans and Work item layout.