netbackup version 7.5 linux

Hi All,

1.how i can increase the priority of a queued duplicate SLP job?  is it using  nbstlutil -modify version ?

2.up gradation from 6.5.0.4 to 7.1 and then to 7.1.0.4.Now can we go back to 7.1? if yes what are the steps?

3. bpdbm issues are logged under which logs?

4..For DR, ip should be same or it can be different?

5. in case of unix, when we do upgrade from 6.x to 7.x,we need to remove the package..but why not in case of windows?

NBU 7.5

Linux OS