The following apply for purposes of this chapter:
If, after application of this subdivision, a tiered partner is assigned to more than one (1) tier, the tiered partner shall be treated as being assigned to the highest numerical tier to which the tiered partner could be assigned.
However, if a tiered partner receives an adjustment reported on a partnership audit tracking report under Section 6226 of the Internal Revenue Code, the time period applicable for the tiered partner is the longer of the time period described in clause (D) or ninety (90) days from the date prescribed in Section 6226(b)(4)(B) of the Internal Revenue Code, and any other applicable deadlines under this subdivision or subdivision (9).
IC 6-3-4.5-2