If you need to create a new amortization rule that is based on a new Begin Date, then you change the existing amortization rule using the Edit Amortization & Accretion Rules panel.
Note that whenever an amortization rule is found in normal processing, the rule row Instance is stored on the lot as tag 4256. Each time a rule is selected, the earnings process checks tag 4256 to see if the Instance of the amortization rule has changed. If the amortization rule Instance has changed, Eagle Accounting initiates a retrospective or prospective amortization calculation that is based the value in the Amortization Rule Change Application (tag 9007) field.
If you set Amortization Rule Change Application (tag 9007) to:
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