Hi Raghu,
An asset cannot be added / mass copied to a TAX Book without having a CORP equivalent asset in place.

Please try the following workaround:

1- Add the assets in CORP book with a cost of 0.00
2- Then have these mass copied to the TAX book
3- Once these are in the TAX book, issue a TAX book adjustment to reflect their values in TAX
4- In the CORP Book retire the asset.

Please try and let me know if this works for your scenario.

Regards,
Rohit