I have a CX-500 with FLARE 2.19.500.5.014 and NaviSphere 6.19.0.4.15

I have one DAE filled with 146GB FC disks using RAID5.  This is my original working LUN.

I have a second DAE filled with 146GB FC disks using RAID 5. This is the LUN I want to stripe expand into the original.

In NaviSphere, I went to the RAID Group, chose the original LUN, chose Expand, followed the Wizard, chose Stripe Expand, and the Wizard correctly found my second DAE so I selected that to add to my first LUN.

I believe I meet all the criteria to do a stripe expand, as the disks are the same size, the RAID is the same, the two LUNs are the same size, and they both sit on my SP-B. BTW neither of these two DAE's hold the vault disks which are on a separate enclosure.

The problem is 4 days after starting the job, the stripe expansion shows 0% completed. Any idea's what I've done wrong?  Thanks.