I think there is something (maybe more than one thing) I am fundamentally misunderstanding.
A) I went to the ip address of my obi1062, logged in as admin, System Management->Auto provisioning set to Disabled. Hit submit.
B) set a speed dial using the phone's process I noted above (push blank speed dial then added from phone book)
C) Went to
obitalk.com. Checked the autoprovisioning setting there and it reflected disabled just like I set it on the phone in step A.
D) Update a setting for one of the other button settings and hit submit
Shortly after that my phone restarted the update I made in D showed up on my phone but my change in B was gone--which is just the same behavior as I saw before I set autoprovisioning to disabled.
I am not even sure what was supposed to happen when I disabled autoprovisioning.