From what I can tell the location of Gen IV's egg location stays the same through the poketransfer process.
I can find Traveling Man, Riley, Pokemon Ranger, and G4 Day Care Couple in the Black/White list
But Mr. Pokemon (the guy that gives you the Togepi in HG/SS) is nowhere to be found under Black/White locations
When I hex edit the location to Mr Pokemon's value when the target game is Gen V it just resets to 00 (- - - - - - - - - -) when I set it in a box.
Does Mr Pokemon's value not carry over to Gen V or something?