Build 300 of BUS.exe comes with a change regarding the old AutoInsert task. Due to introducing the new ShowInsert task the AutoInsert task was renamed to PoolInsert.
Please note that you need to change the type of such task while performing the update to Release 2011.1 or newer. This change has to be made with the Admin tool while BUS is closed.
You need to change the value for the parameter Type from AutoInsert to Pool-Insert
If you do not change this value manually the newer BUS versions won't display the old AutoInsert tasks.