Did some memory location lookings with the new Mystery Gift Wondercards from the 10/10/2010 Event.
PIDs generated for Mystery Gift/Wondercards are stored at: (White)
PIDs generated for Mystery Gift/Wondercards are stored at
0225CCF8 (00F991F8 in Cheat Engine)
Engaging the talk with the man:
The location did not change until pressing A to advance after the message
with the Exclamation Mark (!), before you receive the Pokemon.
It then advances twice more after you advance past the message
that you received the gift just like Generation 4.
The PID is then XXXXYYYY.
It persists only momentarily, once you dismiss his final message
(We hope to see you again/blah blah) the location then
adjusted to 003BYYYY for the next gift.
Also, recapping Party/PC Box PID locations (other data is encrypted) for those who want to check without saving.
Other data is still encrypted, so you can't view the IVs in a specific location.
Mystery Gift IVPID/Nature Generation Patterns
Summary of Mystery Gift IVNPID Patterns: