Two Quick Question(s)

1
In the Soul Shrine bonus dungeon do the enemys you fight appear on the Veldt in the WoR even if you didn't encounter them in the main game? e.g. if I missed a Red Magna Roader during the escape from the Magitek Factory but defeated one in the Soul Shrine would I then be able to find one on the Veldt (for Gau's rage list).

2
This might be a little hard to find out for sure, but does anyone know if the HP gain you receive after lv up is the same on the GBA as that for the SNES or Playstation version.

I can only comment on the second question, and my answer is "probably". I haven't noticed any faster or slower HP/MP growth myself; my characters seem to endup with as much HP and MP at lv. 99 as they did on SNES. Remember that stamina affects HP growth a bit though, but you would probably benefit more from extra str, spd and mag.