I'm trying to understand the Open Assets transaction example given here.
Everything makes sense, more or less, until the end of the description:
Output 6 receives the first 3 units of input 5. Input 5 has the asset ID A2 so the asset ID A2 is assigned to output 6.
What happens to the remaining 6 units of Asset A2? The unit count starts at 9 for input 5, and output 6 claims 3 units. That leaves 6 units unaccounted for. Input 5 is spent after this transaction, so it's not clear how it can be reclaimed.
What am I missing?