Shouldn't a mash instancer be exported as "instanceable"?

[sharktacos]

When exporting a mash instancer to USD (file>export selected) it creates a USD file with the following hierarchy:

pointInstancer
--prototypes
----geometry

I would expect the geo to be tagged as "instanceable" in the metadata. I can of course select this in the AE. But am wondering if there is a reason that this is not happening by default on export. Perhaps I'm missing something, but I believe that this would mean that the USD instances are not working properly if they are not "instanceable" is that correct?

At least, looking at the Disney Mohana Island USD the geo is tagged as "instanceable."

[sharktacos]

Answering myself here, from what I'm reading in the USD Survival Guide, my above assumption appears to be incorrect:

"Explicit: Explicit data instancing via UsdGeom.PointInstancer prims. The idea is simple: Given a set of array attributes made up of positions, orientations, scales (and velocity) data, copy a Prototype to each point. In this case prototype refers to any prim (and its sub-hierarchy) in your stage. We usually group them under the point instancer prims for readability.

Implicit: Implicit instances are instances that are marked with the instanceable metadata. Now we can't just mark any hierarchy prim with this data. (Well we can but it would have no effect.) This metadata has to be set on prims that have composition arcs written."

If I'm understanding correctly that would mean that the exported mash instance is explicit and therefore does not need the metadata tag.