Comment 3 for bug 1834509

@Wayne, I don't think it is that simple. If the user just places the symbol from the library with the units and annotates, then what you suggest is fine. However, if the user were to then change one of the units to be from a different part and doesn't update the annotation, what you suggest would not work anymore.

For instance:
1) Open the pic_programmer example
2) Open "Edit symbol library links" and note that all of U2's parts are for 74LS125
3) Open the properties of U2B, and edit the library reference to be unit B of 74LVC125
4) Open the library links dialog again and see that now U2B is in a different row while U2A/C/D stayed in the same one