When does the Actual Completion Date gets updated on sales order fulfillment line?

Summary:

We want to know how the Actual Completion Date gets updated on the fulfillment line. This is because according to the Orchestration Pause Rule, the order line will remain in pause step as long as the Actual Completion Date is null. However, the Actual Completion Date is not getting updated on the order line so the pause is not getting released.

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