disposal fix assets in the next month of acquisition

Hi all,

I select the parameter 'depreciation is required in the same month of disposal' in FA module. And the case is as follow:

the acquisition is on May 10, and the posting date of scrap disposal is on June 20, so I make the disposal-scrap in the FA journal. but I find the voucher did not have the accumulate depreciation account, so the fixed assets disposal account is not balance.

but if I make the depreciation in June, and the scrap date is in July, the posted voucher is right.

So I am confused about it.

Thank you.