Originally Posted by Horace

If you have a Rewards account and an SPG account, you would probably want to keep both for the time being — especially if you have upcoming reservations under both accounts. The Rewards account should be configured to use your Rewards credentials. The SPG account should be configured to use your SPG credentials.

You can use either account to make new reservations, but you would probably want to use the account with higher elite status, if they differ.

Once you have the option to combine your accounts, and you exercise that option, you would probably want to keep only the app for the surviving account.

The "Rewards" and "SPG" brands will be replaced with a new program name in 2019 — accompanied by a new app or renamed old apps.