BlackboardTransferTest

void ACodeAIController::UseCopiedBlackboard(UBlackboardData* newBlackboard)
{
    // Collect list of all keys we have in new blackboard
    TArray<FBlackboardEntry> keys = newBlackboard->Keys;

    if (IsValid(newBlackboard->Parent))
        keys.Append(newBlackboard->ParentKeys);

    // Store all keys of that type in current blackboard
    TMap<FName, UObject*> cachedObjects;
    for (FBlackboardEntry key : keys)
    {
        if (Cast<UBlackboardKeyType_Object>(key.KeyType))
            cachedObjects.Add(key.EntryName, Blackboard->GetValueAsObject(key.EntryName));
    }

    // Set new blackboard
    UseBlackboard(newBlackboard, Blackboard);

    // Restore any keys
    for (FBlackboardEntry key : keys)
    {
        if(cachedObjects.Contains(key.EntryName))
            Blackboard->SetValueAsObject(key.EntryName, *cachedObjects.Find(key.EntryName));
    }
}