Here is a quick information about a hotfix in the Project accounting area.
If you are using the CU3 version of AX 2012, you will notice that when you post employee timesheets, the revenue accrual transactions will get posted on the timesheet posting date in the General ledger.
The revenue should actually get posted on the timesheet transaction date/ timesheet line date.
This is a bug in AX 2012, CU3 version and a hot fix is available by MS for this. You can download the hotfix at the link below.