Retirement Issue - wrong gain loss calculated

Version 9.2.17  Asset Management

We retired an asset with a current month date that had previously been through a mass transfer with a prior period date.  We elected to store depr by period at the BU level.  It appears that the Standard Deprec field on the DEPRECIATION table has missed one month of depreciation when calculating gain loss and removing accum deprec.

Here is a look at the Depreciation table.