SCCM 2012 SP1 Offline Servicing - Failed to install update

Last week I did a deployment on a Windows 7 (with offline updates integrated), created in ConfigMgr 2012 SP1. Because of new installation, I want to deploy the image with ConfigMgr 2012 R2. During OS deployment (installing system components) the following error message was seen in mini-setup: Windows could not configure one or more system components. To install Windows, restart the computer and then restart the installation.

After reboot another error message was displayed: The computer restarted unexpectedly or encountered an unexpected error. Windows installation cannot proceed. To install Windows, click "OK" to restart the computer, and then restart the installation.

Lucky me I found the issue reading the following post:

SCCM 2012 SP1 Offline Servicing - Failed to install update
http://social.technet.microsoft.com/Forums/en-US/9c34add1-5261-4dcf-b3f6-7c26ef4fcd28/sccm-2012-sp1-offline-servicing-failed-to-install-update?forum=configmanagerosd
It mentions: I have seen this, best I can tell, whenever offline servicing fails, you end up with a corrupted image and get the errors above.  Only solution I found is, use the bak WIM file that the offline servicing process to rollback.  Then you can retry offline servicing until it finally works without errors.  Then your WIM should work again.

After creating a new image (copy of install.wim from installation media) and importing updates by offline servicing again, everything went fine. Still strange that offline servicing can (sometimes) break your deployment image! Anyone?