[For tax years through 2010, this section reads as follows:]

All income remaining after allocation under Sections 12-6-2220 and 12-6-2230 is apportioned in accordance with Sections 12-6-2250, or one of the special apportionment formulas provided in Sections 12-6-2290 through 12-6-2310.

[Effective for tax years after 2010, this section reads as follows:]

All income remaining after allocation pursuant to Sections 12-6-2220 and 12-6-2230 is apportioned in accordance with Section 12-6-2252, or one of the special apportionment formulas provided in Sections 12-6-2290 through 12-6-2310.