After Changing the Mehtod from null to other null Depreciaion is calculated for current period only
Some previously entered assets with date placed in service as 01-oct-05 were having depreciation method as null
In the current open period I had changed the Depreciation Method and of such assets to other than null
After running depreciation the system has calculated the depreciation for current month only and not for the previous period i.e from 01-oct-05
Rgds
Dev