Creating Pokemon from older games, do they need a different TID & SID

[Fluron]

As said in the title, I basically only got back into Pokemon when ORAS was released. I want to know if I have to change the SID and TID when I hex a poke from an older game (Mewtwo from X) in case something can be picked up on their end and I end up getting banned for example. Thanks

[Sabresite]

The chances of you getting a TID/SID combination that is the same between 2 games is very close to zero.  I suggest using different TID/SID.