Standards Tab: Replaced items should not be checkable.

[2:39:05 PM] roverwolf (David Ward): So, SS.A.1.3.3 is not considered selectable:

<TOPIC id="85A3257E-B2AF-11DE-99B1-79569DFF4B22" parent_id="85A2C3D6-B2AF-11DE-99B1-79569DFF4B22" state_num="SS.A.1.3.3" label="Benchmark" seq="10" level="3" placeholder="N" linkable="N"><![CDATA[The student knows how to impose temporal structure on historical narratives.]]><TOPIC id="85A4F3AE-B2AF-11DE-99B1-79569DFF4B22" parent_id="85A3257E-B2AF-11DE-99B1-79569DFF4B22" state_num="SS.A.1.3.3.1" stem="The student:" label="Expectation" seq="11" level="4" placeholder="Y" linkable="N"><![CDATA[Content addressed in SS.A.1.3.1.]]></TOPIC>
[2:39:17 PM] roverwolf (David Ward): (linkable="N")
[2:39:50 PM] roverwolf (David Ward): This is a new situation that we hadn't seen before.
[2:39:53 PM] Todd Sherman: So that is why when we check it, it unchecks.
[2:40:07 PM] Todd Sherman: Placeholder = Y?
[2:40:19 PM] roverwolf (David Ward): "Content addressed in SS.A.1.3.1", so it has been replaced or something.
[2:40:32 PM] roverwolf (David Ward): Yes, but it should not have been checkable.
[2:40:37 PM] roverwolf (David Ward): (so that part is a bug)
[2:40:50 PM] Todd Sherman: Our bug?
[2:41:28 PM] roverwolf (David Ward): Yes. That item should not be checkable via the interface.
[2:42:06 PM] roverwolf (David Ward): A case that was not considered – bottom level nodes not available.