Please post your questions in specific forums instead of creating blogs.
Moved to correct forum
You can try following the following steps -
1. Once your ttadv.* tables are cleared, open your modified table definition and make some change like - change a label of a field
2. Save and close
3. Now run the CRDD without domain's selected.
4. Log out and log back in.
Unless you try to do something beyond what you have already mastered, you will never grow!