Can I backdate Initial Mass Copy to a previous year?

Hi,

We have been running our asset corporate book for a number of years (previously on 11i, now in r12) and we now need to set up a tax book which will run with different depreciation rates to the corporate book.

We have a requirement to report historic financial information for the last 10 years on the 'new' tax book depreciation basis, for all assets in the corporate book over those years.

Is it possible to do the Initial Mass Copy for a date 10 years ago, then run the periodic copy for all intervening periods to bring it up to date? The main reason for this is that we have a number of retirements in previous years which I understand would not come across if we choose a date for the initial copy which is later than their retirement date.