Epicor 9.05 Cost Accounting Workbench

I need to know how where the cost are pulling from when costs are rolled.


Our costs are stored in a master list. I was testing a cost rollup for a manufactured part.


I used Cost Adjustment to change the cost of the raw material to $5 (from $3).


When I loaded the cost workbench, the $3 was there. When I rolled and ran the cost edit list, the raw material cost showed the "old cost" as $5 and the "new cost" as $3.


Can anyone point me to some user guides that will help me understand Epicor layout and configuration?


Thanks -