We regularly copy and paste from other InDesign documents. It is really frustrating that every time we do this the incoming swatches and styles are also pasted into the document, resulting in extensive lists of swatches and styles with similar names. Much like the "Preferences - Clipboard Handling - When Pasting Text and Tables from Other Applications - Text Only" option, it would be incredibly useful to offer this feature for "Other InDesign Documents" as well.