Series of minor questions about OpenPGP 1

[Peter Thomas]

On really last addition on this (promised :-) ):
I tried to mix up keys with new and old packet header types.
Is it desired that gnupg simply converts them back to old packet
headers (if possible) without any notice to the user?

What will keyservers do when someone uploads a key with e.g. old
packet headers,... that's already there, but just with new packet
headers?

Cheers,
Peter