Changing Tax Book Depreciation Method

 I know that I cannot change the depreciation method on an asset in the tax book through the tax upload process once depreciation has been run, but does this mean that the depreciation method cannot be changed through the application either if it is not the same period the asset was added?  When I try to change the depreciation method on a tax book asset in the application 2 months after it was added, I get an error message that I have to rollback depreciation.  I have no problem changing the method on the asset in the corporate book.

Thanks,

Aileen