Capitalize assets under construction

I am working with capitalize assets under construction. For this assets class we need to desactivate the fiscal area (because they are not assets for fiscal reports). The problem is that when we settle these assets to the final assets (new class), the value in the fiscal area -in the new class- is cero and we need that the value is the same as the accounting area. Is it possible?? Any idea??

Thanks,

Cecilia