Why is the capability not present on playerclone event if it is present before the player dies?

[Anonomys]

Hello, I'm having trouble keeping player nbt data after death, this is my code currently:
 

@SubscribeEvent
    public static void onPlayerCloned(PlayerEvent.Clone event) {
        if(event.isWasDeath()) {
            System.out.println("Player died");
            System.out.println("Cloning wallet 0/2");
            System.out.println(event.getOriginal().getDisplayName().getString());
            System.out.println(event.getOriginal().getCapability(WalletProvider.WALLET_CAPABILITY).isPresent());
            event.getOriginal().getCapability(WalletProvider.WALLET_CAPABILITY).ifPresent(oldStore -> {
                System.out.println("Cloning wallet 1/2");
                event.getPlayer().getCapability(WalletProvider.WALLET_CAPABILITY).ifPresent(newStore -> {
                    System.out.println("Cloning wallet 2/2");
                    newStore.copyFrom(oldStore);
                });
            });
        }
    }

I have a /balance command, and when I give myself some money it displays the correct balance, but for some reason the capability is not present in the playerclone event, the

System.out.println(event.getOriginal().getCapability(WalletProvider.WALLET_CAPABILITY).isPresent());

prints "false".

I know that the capability is being attached properly and everything, this is my console:

Attached wallet to player
Player died
Cloning wallet 0/2
Dev
false
Attached wallet to player

Please anyone help

Edited March 29 by Anonomys
clarification

[warjort]

https://github.com/MinecraftForge/MinecraftForge/blob/d448ffd5398151c14d4668e6798fac8e8b63e02d/src/main/java/net/minecraftforge/common/capabilities/CapabilityProvider.java#L173

e.g.

https://github.com/mekanism/Mekanism/blob/c0c34e9bff3d2fd9088cc03f175adf4df291011c/src/main/java/mekanism/common/CommonPlayerTracker.java#L80

Edited March 29 by warjort

[Anonomys]

Thank you so much!