Comment 7 for bug 2047940

Here's what I see with a test order set up with a delayed LI and a fully cancelled one:

Delayed
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* Actions drop-down in the LI has Mark Received active
* When expanding LI details, the Mark Received link/button is present (as is the Cancel link/button, to allow the LI to be fully cancelled)

Fully cancelled
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* Actions drop-down in the LI has Mark Received inactive
* When expanding LI details, neither Mark Received nor Cancel show up

In both cases, "Mark Selected Line Items as Received" in the Actions drop-down in the PO header is active (provided that at least one LI is selected) - and will receive any LI that is on order, delayed, or cancelled.