Terminator sequence in trash bytes resetting?

[Puesness]

With X and Y coming out this weekend, and capability to transfer Gen V mons later this year, I was curious to see if any problems would arise with my favorite starter, once it entered Nintendo's detecting cloud. Now, since the golden days of GEN I, I've been nicknaming my Charizard as Ryuma (a nod to Ryoma from the Getter series), but I discovered something odd when saving the .pkm file (simply titled "test.pkm" as an attachment to this thread) and uploading it to Pokecheck.

The ending sequence in the name (/FFFF) constantly resets itself. Now, if I change it, save it, and upload it onto Pokecheck it turns up just fine. But if I open the file again, I continue to see "Ryuma\FFFFnder" with the terminator sequence resetting. Now, I'm confident that a remedy for this is simply DON'T OPEN IT AGAIN AFTER SAVING IT, to where my bad boy will make it over to my Y copy without any problems, but I am curious if this nicknaming issue is selective with certain names? My Venusaur is aptly named "Veena", and the correct trash byte sequence follows it without any need to re-input said data.

Thanks for your time!

test..pkm

[evandixon]

I haven't looked at the pkm yet, but it sounds like nothing's wrong.

The nickname overwrites the original name, adds the terminator, and ignores all characters after it. If Pokecheck says it's legal, then don't worry.