Issue : Ability to Use Target end and Target start in new workflow editor

Summary:

• Earlier in Jira we had the ability to edit the workflow in new editor and old editor view as well.

• Starting March 30, 2026 all the sites were moved to new editor. more details on the same here : Default Experience: New Workflow Editor

• The Target start and Target end fields are specialized system fields introduced by Advanced Roadmaps (Plans). Because they use a unique data type rather than the standard Jira "Date Picker" or "Date Time" types.
• Earlier in old editor these fields could be used to add in validator to compare the dates etc.
• Once moved to new editor workflow the fields are not shown in drop down to be added 
• If the fields was added in old editor they are visible
• This can get confusing and there should be consistent behaviour

Suggestion

To all to add the fields in new editor as well

Workaround that can help some cases:

To achieve this validation, you can use a custom field.

1. Create a new "Date Picker" custom field (e.g "Target End Mirror").

1. Set up a Jira Automation rule that triggers when the Target end field is updated, copying its value to your new custom field.

1. Use this new custom field in your "Compares to Another Date" validator instead.