Simultaneous availment of cenvat & drawback

Hi, Currently, my company imports various input materials and CENVAT Credit over CVD 3(1) and 3(5) is booked over the same. However, the finished goods manufactured from such inputs are sold domestically and exported to various nations. Duty Drawback @ All India Rate is claimed as per DBK Schedule on FOB Value of all exports. I am concerned about simultaneous availment of entire CENVAT Credit and DBK amount. CENVAT Credit of CVD on imports is being utilized against Excise Payment for Domestic clearances. Could anyone suggest over correctness of simultaneous availment of both the benefits. Please mention the relevant provisions whether or not the same is allowed under Law.