BKK-DOH upgrade for 10k Baht
I purchased nested tickets, the outer in Y booking code N, the inner in J.
Upgraded segment 2 with miles and Flying upper deck A380 on first segment.
Got a mail offering upgrading BKK-DOH for 10500B (approx 275 euro), found this not expensive and went for it.
Will be able to upgrade outer return segment with new miles...
Don't like the A380 Y upper deck anyway.