9W is a Krisflyer partner so I assume the otherway round it is the same.

I credited miles earned on AI to SQ (which is the other Krisflyer partner), but I didnt recieve the Tier Bonus nor were the miles recognised to reach the next tier level. I assume it would be the same situation if you credit miles earned on SQ-metal to 9W.
Based on that experience I would use rather Krisflyer or any other *Alliance FF programme to credit.