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Datawarehouse jobs not running. Seems to be errors in the setup. How much data will be lost if they are recreated

I installed RTC 5.0.2 and everything seemed fine until we realized that there was no status of datawarehouse jobs ever being run. This is on Oracle 11g.
My question is: If I drop all of the datawarehouse tables and user and recreate - would the historical data be recreated from the ccm tables. What am I going to lose?