1099-OID box 6--Separate for Taxable and Tax-Exempt?

I have a 1099-OID that is divided into two sections: Taxable Obligations and Tax-Exempt Obligations. Some boxes can be found in just one section or the other, but a few, including box 6--Acquisition Premium, appear in both.  The TT worksheet corresponding to this form combines the box 6 values for the two parts of the statement. Is this appropriate? Thanks!