As per latest Amendment., Finance Act 2016 has deleted the proviso appearing in Section 44AD (2), consequent to which, deduction of the partner’s interest and salary is not further allowed for a partnership firm opting for presumptive scheme under Section 44AD of the Finance Act 2016.
So, If the Firm opt u/s 44ad then Interest (and Remuneration) not available... If You are claim interest then it's wrong as per 44ad...