Ah !!!
Now it's become clear. You only see that stuff if you put a filter in for the address your interested in.
This suddenly explains everything ! I can see that with enforcement active, I'd have gained another 11 DRK. That's how many payments I've been skipped over due to pools with legacy miner software.
tx_0_vout_1 alone accounts for 7 missing payments.
Fantastic stuff !!!, thanks.