1. Adobe Campaign Classic v7 Documentation
Delivery properties: In the "Scheduling" section of the delivery activity properties
the documentation states
"You can postpone the delivery by setting a contact date in the future... The Compute target on contact date option lets you recalculate the target on the specified contact date instead of using the target calculated during the execution of the workflow." This directly supports using the contact date to ensure the target is up-to-date.
Source: Adobe Experience League
"Delivery properties".
2. Adobe Campaign Classic v7 Documentation
Scheduler: The documentation for the Scheduler activity explains its function: "The Scheduler activity lets you trigger the execution of a workflow according to a defined schedule." This highlights its role in starting the entire workflow
which is a different mechanism from scheduling an individual delivery within the workflow.
Source: Adobe Experience League
"Scheduler".