Is there any way to transfer mons to past gens?

[guisadop]

Hi everyone, I searched everywhere and couldn't find any answer, so I'm going to ask you: is there any program that lets me transfer my mons from, say, gen 6 to gen 5? I know I can just gen them manually but I have 400+ mons that I want to transfer back, so it's probably going to be a pain in the ass.

[Aquaaquaaqua]

Yes.  http://pkxdelta.co.nf

FYI if you want to go back even further, (like, say, to Gens 2 or 1, like I did yesterday,) the conversions for that website only worked for me up to Gen 3, however what did work was opening up a Gen 3 and a Gen 2 save in Metropolis' Java program, (as opposed to his website,) as just dragging it and dropping it from one to the other.