Symptoms
Standard Change template proposals do not honor reference qualifiers on change_request table fields
Release
Kingston patch 6
Cause
Change request values is a Macro-type catalog variable on the item "Propose a new Standard Change Template".
It is using the UI macro: std_chg_template_val_render.
Because the reference qualifier defined on task.assignment_group is not associated with the UI macro std_chg_template_val_render, the behavior is expected.
Resolution
The UI macro (jelly/javascript) could be edited to fit with the business needs.