ABR11 After Installing WindowsUpdate on Server2008R2 - Tasks lost

on Server2008R2 is installed actually Build of ABR11

we create one Task to backup to RDX-Media
and another Task with fullbackup and incrementel Backup to a NAS

when installing Microsoft Updates and restart the Server
the created task are incomplete, that means the incrementel und cleaning task is lost, or the fullbackup task lost, so the Task cannot be run.
in the Log is reported . "the task ID { ....} doesn´t exist.

Sometime also the RDXTask is lost

the only thing that we can do
is delete the task in folder Tasks Storage and clean then about schedmgr. with task zap

than recreated the Tasks

is there another solution, that the Tasks don´t loose, when MicrosoftUpdates are installed