This may be what you are talking about, the new deferred payments. I saw this in Amazon News about a week ago.

I hope for you it is this and not a problem. Good luck!

View your reserved payments in the new Deferred Transactions report

As part of our Payments based on delivery date policy, we typically reserve your sales proceeds until seven days after an order is delivered.To provide you with more visibility into these funds that we've reserved, we've added a new deferred transactions status on the Payments dashboard. By November 1, your delivery date reserve amounts will display as Deferred transactions in the Total balance box at the top of the Payments dashboard. Until then, they may still display under the account-level reserve field on your Payments dashboard and reports. Note that if you aren't subject to our delivery date policy, your dashboard won't be changed.To view more details, click the deferred transactions balance. The Transaction view page will display the list of orders that make up this balance, the deferral reason, and the estimated payment release date for each order.