Why are my capabilities not accessible on my old player?

I made a few custom capabilities for my mod and I'm trying to use the player clone event to make the capabilities persistent between deaths. If I look at the debugger I can see that the oldPlayer variable has the capabilities and the correct values attached to it. But when I try to use getCapability, it just returns a LazyOptional with null as you would expect when it is not found. Also the ifPresent(...) method does not execute the code inside. I have used the getCapability multiple times already in other parts and never ran into any problem. For example, I've supplied a debug 3 variable from my LivingEntity death event (this part is only active on players) and this one works just fine and returns the capability as you would expect. Does anyone see anything I did wrong or a reason as to why it doesn't work and how to fix this issue?
Edit: Solved: I needed to reviveCaps() before I could get them.

@SubscribeEvent public void onPlayerClone(PlayerEvent.Clone event) {
Player oldPlayer = event.getOriginal();
Player newPlayer = event.getEntity();
var debug = oldPlayer.getCapability(UpgradeDataProvider.UPGRADE_DATA); // This returns a LazyOptional with supplier null
var debug2 = newPlayer.getCapability(UpgradeDataProvider.UPGRADE_DATA); // This returns a LazyOptional with a valid supplier and works fine
oldPlayer.getCapability(PlayerDataProvider.PLAYER_DATA).ifPresent(oldStore -> { newPlayer.getCapability(PlayerDataProvider.PLAYER_DATA).ifPresent(newStore -> { newStore.copyFrom(oldStore); }); }); // this does absolutely nothing oldPlayer.getCapability(UpgradeDataProvider.UPGRADE_DATA).ifPresent(oldStore -> { newPlayer.getCapability(UpgradeDataProvider.UPGRADE_DATA).ifPresent(newStore -> { newStore.copyFrom(oldStore); }); }); // this doesn't either oldPlayer.getCapability(CurrencyDataProvider.CURRENCY_DATA).ifPresent(oldStore -> { newPlayer.getCapability(CurrencyDataProvider.CURRENCY_DATA).ifPresent(newStore -> { newStore.copyFrom(oldStore); }); }); } // neither does this

In the LivingDeath event:
var debug3 = player.getCapability(UpgradeDataProvider.UPGRADE_DATA); // This works just fine and returns the capability as expected.

Edited July 11, 20241 yr by DerpDeBouwerXD
Solved