Originally Posted by
Cymro
It is 600 TP, and you must complete four qualifying flights (BA metal/coded or IB metal) when earning those TP.
Once you hit silver, your qualifying flights resets, but it has no impact at all on your status or retaining it.
It's a bug, but the only thing it affects is the qualifying flights display, so you can safely ignore it.
Thanks Cymro! I had doubts it was a bug... as there's no mention of that on the BA website and I managed to reserve seats on future flights