Backup Jobs and groups change randomly almost on a daily basis

[Frankg]

Backup Jobs and groups change randomly almost on a daily basis. I have 25 backup jobs, 10 groups (named after their divisional l unit), 250 computers and 10 servers. Say I bring a new computer into our network and install the Backup Exec System Recovery(8.5.5.33937)+Management Control(8.5.5.34379)(With user interface) from https://myserver:8443/axis/DownloadCenter;jsessionid=379E52B5061A2F06A8B551707BAB7833?type=getinstal.... Then I assign a group and backup job(s) via SBESR Manager. A few days later when I check backup job, properties via the SBESR Manager some of the Groups and backup job have changed.
 

Question:  Any Idea what may cause this?
 

Do you have a tool that can be used to clean up our SBESR Manager database? There has been approximately 40 computers removed from our network that were not marked as unmanaged computers.
 

Thanks in advance.
-Frank