Prevent resetting of InMemoryBackingStore when serializing

[SeverinNauer]

Currently the tracked properties in the InMemoryBackingStore get reset when serializing an object. For my purposes I want to create a report of the objects that are going to be sent to the graph api before actually sending them. At the moment this is not easily possible, because I can only serialize them once.

This is a short example of the problem I want to avoid

var group = new Group()
{
	DisplayName = "Test Group"
};
var serialized1 = await group.SerializeAsJsonStringAsync(true);
// {"@odata.type":"#microsoft.graph.group","displayName":"Test Group"}
var serialized2 = await group.SerializeAsJsonStringAsync(true);
// {}

Is there a way to avoid this behaviour?
The only workaround I know is to disable (which is not an option for me) or replace the BackingStore implementation. I'm okay with writing an own implementation of the BackingStore but it feels kind of dirty since I basically need to copy past the InMemoryBackingStore. I'm also not sure if I'm going to run into other troubles down the line if I do this.