We have done a few v14 to v15.5 upgrades and all goes well. Most of the systems have been between 5-10 extensions. I normally take a backup of the current system, uninstall, install the new system and restore the backup. At that point, I am left with the new system, and all phones currently using the older (custom) template. I then find myself having to open each extension > phone provisioning, copy the mac, delete the current phone, click on add, find the new template, paste the mac and apply. Then re-provision the phone. Is there an easier way to get a large quantity of phones to a new template post v15.5 upgrade rather than doing it phone by phone?