If you have made importing mistakes and you need to change the depreciation values for your tax and/or accounts figures for many assets at a time instead of one-by-one, one way you may be able to achieve this is using AssetAccountant's bulk additional cost feature.
You could try applying an adjustment to the cost of the asset which will then alter the tax value by the same amount which would have the desired effect. This is as long as long as you are not trying to adjust the accumulated depreciation figures.
