Transfer of Balance

Yes ....

• An NRI can transfer funds from NRO to NRE account only if the amount is within USD 1 million in a financial year. 
•  Transfer of funds from NRO to NRE account is subject to payment of applicable taxes. Only if the taxes are clear you can move funds
• The source of funds in the NRO account should be transferable/ repatriable 
• For transfer of funds from NRO to NRE account, NRIs need to submit Form 15CA (online application form) and form 15CB (Chartered Accountant Application) to the bank branch.