oil and gas:1099 Misc with both box 1 (sign on bonus) and box 2 values (royalties)

In the Wages and Income Section, Rental Properties and Royalties (Sch E), there is an option to add a rental or a royalty. I have both rental (signing bonus) and royalty payments and TurboTax does not allow me to add both box 1 and box 2 values reported in the 1099 MISC as a single royalty option. So, I "split" the single 1099 MISC into two separate entrees in TurboTax - one royalty and one rental. There is state withholding reported in box 15 for both the bonus and the ongoing royalties, so I split that between them, too. The royalty entity has box 2 plus the box 15 amounts for the royalties, and the rental entity has box 1 plus box 15 amounts for the bonus (not really a rental). I see that TurboTax creates depreciation for the royalty entity. I also included the legal fees for the signing bonus with the rental/signing bonus entity. It doesn't feel right splitting up the 1099 MISC like this, but I couldn't figure out a better solution. Is there an alternative, supported way to handle this in TurboTax?