This is no longer an issue, although it appears to be backing up the data nothing is actually being allocated. Space is "reserved" but released when other backups require it.
I don't clear you question. but I think VCB should backup Image Vmware and Backup exec should backup only data, SQL file.
Example you should backup Image by VCB full once a week
and Backup exec backup data everyday.
Can you do with this solution?