Bug: Potential issue with undo/copy/restore state.

[Pandelii]

Repro: Select a table and right click copy.
Delete the table. Import a table. Delete that table. Paste

The table that is pasted is missing mesh and material references, values appear to be saved.

Same applies to cut and undo.

Low occurrence edge case behavior obviously, low priority but may hint at an issue with undo/redo behavior in some situations.

[freezy]

@rbxnk do you have time to have a look at this?