Engineer to Logical Model is not working!

Hello
I have a model that I started by reverse engineering from the database and generated the ER Diagram by reverse engineering to Logical.
After this I had to add some more tables to the relational model which I realized was already in the database and reverse engineered that into the model as well. Now, I am unable to Engineer to logical. Is this an expected behaviour as designed?
Next I am going to try to reverse engineer from a relational model to a blank logical in a new data modeler design file. After that I will merge that change into current model. Please let me know if there is an easier way around this.
Thanks & Regards
Tiji

The valid scripts in this post solved my problem.
Re: Switch from v3EA4 to v3.0.0.4 production - Corrupted models?
Script #1: Search for invalid mappings.
Script #2: Clean up by removing invalid mappings.
Script #3: Call Forward Engineer dialog with exception handling included to share with forum or debug.
Script #4: Call Reverse Engineer dialog with exception handling included to share with forum or debug.
After running Script #2, when we run Script #1, the log will be empty which is the expected result. Now my reverse engineering option does work from relational to logical.
Thank you Phillip and DMBee for guiding me to the solution.
Thanks & Regards
Tiji
Edited by: Tiji on Jun 14, 2011 8:31 AM

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