Originally Posted by msp3

If I'm reading this right, it seems that any OC to NC conversion will auto-refund the 30k difference for OC6, OC8, and OC Tier 1-3 holders, but is there any successful reports of going from OC Tier 1-3 to NC 7?

Originally had 2 OC Tier 4-5s, attached one and downgraded the other to an OC Tier 1-3 before August last year. Now want to pay the 120k difference for NC7, but am wary of turning Amex MR into Marriott points unless conversion can actually be done...