Why do we need to populate Amortize Flag and Amortization Start Date for converted assets?

Summary:

Why do we need to populate Amortize Flag and Amortization Start Date for converted assets?

Content (please ensure you mask any confidential information):

For converted assets, Why do we need to populate Amortize Flag and Amortization Start Date for converted assets?

What are the pros and cons of doing the same?

Pl note: I have already reviewed the support notes and didnt find satisfactory explanation

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