Depreciation Calculation on Addition of an Asset.

Hi All,

Need your valuable inputs on the below issue.

Asset USD 100000 Capitalized on 01.01.2013, Prd Control meth= 01/01/02/02 depreciation SLV 10% is showing USD 833.33 for 2013, An Addition of USD 20000 made on 11.07.2013, now the planned depreciation picture is as below:-

Jan - June = 833.33

July = 2000

August - December = 1000

Now my concern is:-

Why the system is calculating July months Depreciation on half yearly basis (120000*10%/6)?

And why from August till December calculating flat on 120000 (120000*10%/12)?

Shouldn't it calculate the addition from July only?

Thanks in advance,

Pallavi Nathan