The option to decode your .BRAW with a LUT integrated in the official BRAW SDK color grading is not there when there is no "Embedded" (inside the BRAW file) or "Sidecar" LUT available. It depends on how you setup your Blackmagic camera / device before shooting. However, there is a workaround if you didn't set it up while shooting. In the BRAW Studio Panel, there is a button "Extract Embedded LUT" so you can export the LUT in any .BRAW footage which contains one. Then with the "Add LUT To Sidecar", you can apply the extracted Embedded LUT to the other BRAW files which don't contain any LUT yet !