.system mounts (Creating New Volume To Replace Existing)

[Clinderw]

I am getting ready to delete volume01 and move everything to volume02 and then move the hard drives in volume01 to be another vdev in volume02. I am about to go about deleting volume01 and noticed there are three system mounts on that volume.
1. What happens if i delete the volume with them attached?
2. How do i remount them on volume02, i assume they are needed?
3. Is there anything negative that i can do to volume02 with just deleting volume01 which used to be the main volume? Volume02 contains some of the content i have on volume01 that i am deleting.

FYI:
Volume01: RaidZ1: 5 X 3tb
Volum02:
1. vdev1: RaidZ2: 4X3tb
2. (will be from Volume01 + 1 more drive) vdev2: RaidZ2 6X3tb

Thanks,
Chris

 

[SweetAndLow]

In not sure but I do know there are options to change where those mounts are under settings-> advanced

 

[Clinderw]

I moved the main system volume to the new volume via Settings > Advanced.

when i deleted the old volume and restarted the box it remounted the .system's in the new pool.