I add new tables to my model. When I go to Forward Engineer, the table comments are missing in the DDL after a derive model.

Title:  I converted a r7.3.x model to r8.2.x.  I then derived a new model.  During the Forward Engineer to MS SQL Server, I am missing Extended property comments for the newly added tables and columns to my model.

Description:  I converted an original 7.3 version model into version 8.2.01.3297.  Then performed Action | Design Layers | Derive New Model.  When executing Forward Engineer to generate MS SQL Server 2008 DDL, Extended property "Comments" for both Tables and Columns are missing for the new tables added to the original model. 

Solution:

After deriving the model, right click on the new table, go to table properties, under schema, and select the schema name.
Under Actions | Forward Engineer | Schema, go to other options and check on comments; the schema will be automatically checked on as well.  Please preview your DDL, and you will now see the "comments".