well,
we've moved 1 unit by type to new configuration!
(actually 3 nodes v.5.4 / 3 nodes v.6.1)
I can confirm,
QLogic HBAs are working fine with Proxmox v.6.1,
the new kernel seems to run fine, actually moving all VMs, 1 by 1 from old to new environment,
just doing as i sayd before...