Disk controllers change during jumpstart

Hi,

OK, a little weird problem I've not seen before.  I am jumpstarting a
brand new T540, it usually has the controller profiles c1t0d0xx, 8
internal disks.  I boot net to HW RAID the c1t0 and c1t1, and then lay
down an OS, very typical, very boring.  Box gets raided, everything
looks normal, boot net - install, and it complains "Disk profile not
valid ..." Okay, in 1 minute it has gone from c1t0d0xx to c0t0d0xx ...
all 8 disks.  I can't understand the reason for this, I am not moving
any card or drivers around, at all.  What's happening?  I can change
my jumpstart profile, but I would like to understand what's happening.
Anyone had a similar experience?

CT