Here is how you force a Version 7 index rebuild once you have started migrating the data to Version 7.
1. Browse to Program Files within File Explorer
2. Click on the Program Folder:
3. right click on cb.opt & select edit
4. please add true at the end of "com.ahsay.cloudbacko.core.bset.file.RemoteBDB.forceRebuild="
5. close & save
6. Then run a manual backup
7. please remember to remove the "true" within cb.opt after the rebuild has finished
8. Save & close
9. then restart the SDSL Business Cloud Backup service again