Ok, I'm reading the printed terms and trying to interpret them. It says: "you are provided a thankyou member account for each citi account. you can add citi accounts that transfer thankyou points into your thankyou member account provided the citi account belongs to you, and you can combine multiple thankyou member accounts into one thankyou member account, provided the thankyou member account belongs to you." i assume this to mean I'd be ok combining my citi premier and prestige account and then closing my premier account.

I was perhaps confused the above situation with 'sharing' points. Thankyou Points that are shared to another thankyou "account expire 90d after the date they are recieved". I would use this feature if I wanted to share with another thankyou account that didn't belong to me.

Thus, if you combine accounts it seems points will be preserved. but if you share points, they wont be. Am I interpreting this correctly?