Group Consolidation Apps 10 - Elimination rules

We are using Apps 10 UPD15 - I have run the Group consolidation successfully however I now see some of the Inter Company Elimination Rules were historically set up incorrectly.  I have ROLLED Back all Consolidations for ALLyears and have tried to Delete these InterCompany Elimination Rules however I revived the below error. 

1. Why do these consolidation elimination transactions still exist when all Consolidation Status has been rolled BACK 
2. How can this be resolved ? 
3. There is another historical Consolidation Structure which has NOT been rolled back could this be the reason these “Consol Inter Comp Balance”  exist? 
4. The Basic Data for Intercompany Eliminations Rules is GLOBAL for the GRO CON MODULE? Could this be enhanced to include a check box / pull down item to select which Consol Structure each elimination Rule applies to ?