bundle order parent updates to its child happening via UI but not happening via REST API

Summary:

Content (please ensure you mask any confidential information):

When we update the Contract Start Date and Service Duration (which in turn updates the Contract End Date) from the UI for the bundle ultimate parent and the same changes are cascading to its child components, and these changes are reflected in the OM tables. Additionally, a trigger is fired that invokes further APIs or procedures to propagate the same updates to the child contracts.

However, when we perform the same update via the REST API, although the fields are correctly updated in the OM tables, the trigger does not invoke