I can confirm unconnected wires. It may be worth noting that I did not
preserve the -cache.lib file when I archived the design.
I also had an issue with an old asymmetric diode footprint having its
anode and cathode reversed when I used it in a new design. If pin
numbers in the library got swapped around, then now I know why.
For myself, I would much rather that the old library parts get loaded
with my old design instead of trying to convert old parts to new parts.
Is it unreasonable to do that? Load the design with the old parts and
then do the rescue/migration rename? That way the old parts go into the
-rescue.lib file unchanged except for a name modification. Including the
old parts lib (perhaps concatenated into one file) does not seem too
difficult.