You have to select the option 231_CST or 233_CST in the field Return Forms to be filed in Export Report screen to generate both local and interstate returns.
The type of forms to be generated from excel template can be selected in the field Return Forms to be filed in Export Report screen, while exporting data to excel template. The different options available in this field are 231, 231_CST, and CST (if form type selected in F11>F3 is 231), and 233, 233_CST, and CST (if form type selected in F11 > F3 is 233). Only local returns, interstate returns, or both can be generated by selecting the required option in this field. The form types selected are updated in the field Return Forms to be Filed in header sheet of the template.