This is an email which i got this email from adsense and all of you also got this email please do get your backup of payments. and follow their instruction given below.
Dear Publisher,

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Your AdSense account was recently upgraded to the new AdSense payments platform. As part of this change, we will be shutting down the old payments platform completely.

As of June 30, 2015, your payments data prior to your upgrade date will no longer be available.

We recommend that you download your data and save a copy in case you need it in the future, e.g., for tax purposes. To download your old payments data, please follow the steps listed in the AdSense Help Center.

We apologize for any inconvenience and thank you for your understanding.
Regards,
The Google AdSense Team