Product Version: NetBeans IDE 6.0M10 (build 200706260050) 
Java: 1.6.0_01; Java HotSpot(TM) Client VM 1.6.0_01-b06 
System: Windows XP version 5.1 running on x86; Cp1251; ru_RU (nb)

1. Connect to DB Derby.
2. Create a new VWP project.
3. DnD DB table "HOTEL" on Design View.
4. DnD DB table "TRIP" on Design View.
5. DnD JSF component Table on Design View.
   Use popup menu item "Bind to Data...".
6. In the dialog "Bind to Data" select in combo-box the item "hotelDataProvider".
   Click OK.
7. In the window "Navigator" select the tree subnode "hotelDataProvider".
   In the window "Properties" change the value of property "cachedRowSet" from "hotelRowSet" to "tripRowSet".

Result:
1). Exception will appear in the "messages.log" (see the attached file)
2). Design View will be damaged (see the attached "screenshot_dataprovider_newRowSet.JPG")
3). If click "Continue", an exception message will be shown on the table place (see the attached
"screenshot_table_corrupted.JPG")

It seems, it would be better, if JSF component table was able to reconfigure its columns and display new 
correct version of columns with new column names and data.