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Clone the proxy geometries of an entity only once - #1317
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DomCR
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Oct 19, 2026
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Entity.Clone()creates the proxy geometry list of the clone as a copy of the original list and then adds a clone of each geometry to it. The cloned entity ends up with twice the geometries, and the first half are the same instances as the original, so a change to one of them shows up in both entities. Besides direct calls, this happens to every entity cloned throughBlockRecord,InsertandDimension.The list now starts empty, with the original count as capacity, so it holds only the clones. On the DWG files with proxy graphics I tried, the cloned entities now have the same number of geometries as the originals, of the same types and in the same order, and none of them is shared with the original. The test suite passes.