In AutoCAD Electrical it is possible to show cross-reference information on attributes XREFNO and XREFNC, or XREF.
Currently schematic child cross-references are shown on schematic parent symbols, and schematic parent cross-references are shown on schematic child symbols.
It would be useful if it was possible to show a cross reference to the panel component on the schematic symbols, in a separate attribute, for example XREFPANEL, and a cross reference to the schematic component on the panel symbols, for example in an XREFSCHEMATIC attribute.
These attributes would also need to be included in the standard symbols, and the Symbol Builder tool.
It would also be nice if there were an easy way to add these attributes to existing drawings.