Sort of.

I'm not an expert at this but there's a way around it, provided you don't mind saving several versions of the things.

For example, you could save the props Tree and Leaves together and they will load in together next time you select them.  You could also save the bare tree, then the leaves only.

That's not exactly the solution you wanted but it's a workaround.

Coppula eam se non posit acceptera jocularum.

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