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- Retrospective from Original Settlement Date, a retrospective amortization calculation is processed using the Original Settlement Date of the tax lot as the start point of the retrospective calculation.
- Retrospective from Settlement Date a retrospective amortization calculation is processed using the Settlement Date of the tax lot as the start point of the retrospective calculation.
- Prospective, a prospective amortization calculation occurs based upon the amortize cost as of the amortization rule effective data.
For more information, see How the System Calculates Amortization After an Amortization Rule Change.