Upgrades of versions 4.5.1, 5.0.0, and 5.1.0 require the use of a Process Engine upgrade wizard.
After the upgrade, the Process Engine is no longer a separate component. There is a single deployment of both the Process Engine and Content Engine components in the new Content Platform Engine. Each existing Process Engine database becomes a legacy workflow system in the Content Platform Engine. You administer legacy workflow systems, as well as new workflow systems, with the Administration Console for Content Platform Engine.
To move a legacy workflow system to the 5.2 style collocation
model, you use the Region Move tool that is provided under Tools in
the installation package. For detailed information on how to run the
Region Move tool, see http://www-01.ibm.com/support/docview.wss?uid=swg27036552.
There are no longer any dependencies on the IBM FileNet® Image Services software and no IBM FileNet Image Services software is installed. You can remove the older versions of Process Engine and IBM FileNet Image Services after successfully installing the Content Platform Engine software and upgrading the database.
The Database administrator and FileNet P8 administrator upgrade tasks provide more details.