we recently upgraded quality center and dashboard from 9.0 to 9.2. I exported my 9.0 portlets using export objects and imported to 9.2 using Import Objects. I get an error
Import Status
Import failed.
Error: ORA-00904: "PORTLETCAT0_"."CUSTOMER_ID": invalid identifier

Import from C:\Docs\Mercury\Dashboard_Objects_Export_20081008. xml
Running backward compatibility check.
Importing category: Debug
ORA-00904: "PORTLETCAT0_"."CUSTOMER_ID": invalid identifier

Any suggestions?