Yes, when I'm adding the items I don't know that I want to remove them, and some of them are being updated.
Unfortunatly, I can't use /filter, since I need to clean the hash table.
If I save the hash table, and I use /filter then it won't work. After saving the data, the items apears in odd lines and the data in even lines. If I will use /filter, I will only remove the data, and not the items which are related to it.