I would like to have a Rotom in my team for playing through ORAS, but I want it to hatch in ORAS so it has my OT from that game. Is it possible to trade eggs from Generation 5 (or even 4) to Generation 6, or do I have to breed one in XY and trade the egg to ORAS?
I know it's a noob question, but I have taken a break from Pokémon for around 2 years now and feel like I'm rusty with pretty much everything.
e: another question: Is it possible to find out my secret ID in XY, and if yes, will it likely be possible to find it for ORAS as well?