Thanks for the reply.
That was my expectation, but unfortunately it wouldn't work. I installed the new drive into the exact same slot and in a different slot, it would not work. It would not let me select the option to rebuild. I tried different approaches but none would work, the most promising one was to use the configuration wizard to recommend the config and that almost worked - in that the recommended config contained the new drive in the DG - but it failed when I tried to tell it to proceed.
I did not have the same exact disk as the one that fail although the new drive's capacity was 500GB more than the old one.