I’m also highly interested in this!
I’d even like to know what the plan is regarding the USDLevelInfo node vs. the UsdStageActor.
A few things I’ve found:
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You can enable/disable local edits in Unreal by:
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right-click the *-session.usd layer in the Layers panel, and select “Edit”.
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make some changes on individual parts of the USD stage.
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right-click the original root layer .usd file in the Layers panel, and select “Edit”.
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toggle the eyeball next to the *-session.usd layer to toggle the changes you just made
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If you right-click the *-session.usd layer, you can add other USD files as sublayers.
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they’ll show in the UI but I’ve found their actual behaviour is unpredictable
Anyone else tried banging on layering/composition within Unreal? I’d love to be able to export the session layer Unreal is tracking.