After realizing reverse engineering table-filter does not support full regular expression, I modified my reveng.xml:
My reverse engineering xml should get tables starting with name (AA_) (BB_) but excluding tables ends with (_ID), as such:
<table-filter
match-name="AA_.*" exclude="false" >
<table-filter
match-name="BB_.*" exclude="false" >
<table-filter
match-name="*_ID" exclude="true" >

Why do I keep getting duplicate table error?
How many threads does it spawn?

Side note, I have a customized naming strategy java file while reverse engineering, it reformats the classes names; I wonder if the CustomNamingStrategy class gets called first, before reveng.xml was referenced, or not?