Thanks for the reply.
vgscan seemed to be all that was needed to discover the LV. I should have RTFM a bit more before jumping the gun on the post
. Man page on vgscan states that it will happen automatically, but you might still need to run it explicitly after a change in hardware.
The only change that was made at the storage array was the creation of new LUNs, assigned down the same controller (thus changing the SCSI channel discovery of the LUNs leading to the different devfs mappings).
Thanks for the help.