In Windchill there should exists cascading attribute rule support for the Change Task object type. As of Windchill 12.0, the Cascading Attributes tab is available only on the following types:
• Part, Document, Change Notice, Change Request, Problem Report, Promotion Request and Variance, and their subtypes.
• QMS object types such as CAPA Request, Nonconformance, Customer Experience, CAPA Investigation, Nonconformance Investigation and customer Experience Product Investigation.