[GSS](7.2.1) Variables in task description no longer resolved after migration

In a process, the description of a task is defined as

Task with variable: #{name}

Before the process is migrated, when retrieving the task the variable is properly resolved, eg:

<task-description>Task with variable: mweiler</task-description>

However, the migration resets the task description, and the variable is no longer resolved:

<task-description>Task with variable: #{name}</task-description>