Does anything special happen if I transfer a Pokémon from RSE to ORAS?

I've recently come across two fanmade comics which depict the player character of Pokémon Ruby/Sapphire/Emerald trading one of their Pokémon to FireRed/LeafGreen, then transferring it to Diamond/Pearl/Platinum, which is then traded to HeartGold/SoulSilver, Black/White, Black2/White2, X/Y, and finally back to OmegaRuby/AlphaSapphire.

When this happens, we get a heartwarming scene with the Pokémon being reunited with his original trainer.

Watching those comics made me wonder if anything special would happen if a Pokémon were transferred all the way from RSE to ORAS. Since I never owned any 3rd-gen game, I can't verify this for myself.

Here are the two comics:

May & Jirachi
Brendan & Delcatty

Solution 1:

According to Serebii and Reddit, You DO get something for having a RSE pokemon travel back with you to ORAS Hoenn, you should get a certificate like this:

How to obtain it:

Go to the Cove Lily hotel in Lilicove City, on the second floor you'll see a guy wearing a dinosaur pants walking around a table, he is the director of Gamefreak, talk to him and show him a pokemon from R/S/E... and there you go.

Source: Gamefaqs