Pokémon That Cannot Evolve in SV, Like Hisuian Samurott

[sumo]

When creating a shiny Hisuian Samurott in an Apriball with PKHeX, I always send an Oshawott to Pokémon HOME first to give it a HOME Tracker ID, and then edit it in Scarlet and Violet.
For safety,I usually transfer it using the route SV → HOME → LA → HOME → SV to leave a Legends: Arceus record. But if the Pokémon already has a HOME Tracker ID assigned, is it unnecessary to go through LA?
I'd appreciate it if you could check whenever you have time.

[theSLAYER]

It is necessary to go through LA, so that the LA Child block on HOME's end (even if it cannot be seen by the player) is initialized.

Ignoring the fact that HOME can detect the oddity;
With the HOME tracker and the mon, a third party will be able to create a duplicate and verify whether the mon passed through LA.

[sumo]

1 hour ago, theSLAYER said:

LAを経由する必要があるため、HOME側のLA Childブロック（プレイヤーからは見えない場合でも）が初期化されます。HOME

が異常を検出できるという事実を無視すると、
HOMEトラッカーとmonを使用して、第三者が複製を作成し、monがLAを通過したかどうかを確認できます。

Thank you for the detailed explanation!
I had no idea that kind of flag even existed
Just to confirm with PKHeX:

・When I edit an Oshawott in an LA save file and evolve it into Hisuian Samurott,

・versus when I take an Oshawott that already has the passage flag recorded, then edit it in an SV save file to evolve it into Hisuian Samurott

—are there any differences in the data between these two methods?

[theSLAYER]

18 minutes ago, sumo said:

Thank you for the detailed explanation!
I had no idea that kind of flag even existed
Just to confirm with PKHeX:

・When I edit an Oshawott in an LA save file and evolve it into Hisuian Samurott,

・versus when I take an Oshawott that already has the passage flag recorded, then edit it in an SV save file to evolve it into Hisuian Samurott

—are there any differences in the data between these two methods?

First of, a good read. (that reminds me to update the picture in that post)

So, every time a Pokemon enters HOME from a different game, a small subsection of HOME's data for that Pokemon is updated.
So if the pokemon never enters Legends Arceus, the Legends Arceus subsection in HOME will remain blank.

As that data is only in HOME, and not on the pk file itself, the mon would appear the same when you edit via PKHeX.

[sumo]

27 minutes ago, theSLAYER said:

まず、読み応えのある記事でした。（そういえば、あの記事の写真を更新しなきゃ。）

つまり、ポケモンが別のゲームからHOMEに取り込まれるたびに、HOME内のそのポケモンに関するデータのごく一部が更新されます。
したがって、ポケモンがレジェンドアルセウスに一度も取り込まれなければ、HOME内のレジェンドアルセウスのサブセクションは空白のままになります。

このデータはHOMEにのみ存在し、pkファイル自体には存在しないため、PKHeXで編集してもポケモンは同じように表示されます。

I understand now. Thank you very much for the detailed explanation and even providing the link.

This is a separate question…
I’m really grateful for the tools you guys develop — they’re incredibly helpful.
That said, sometimes the usage can feel quite complicated. In those cases, I’ve been feeding the source code to AIs like Claude to better understand how to use them.

Are there any terms of use or guidelines regarding this?
If you personally find it uncomfortable that people are feeding the code to AI, I will stop doing so entirely.