Being an admin of 20-30+ installations of 3cx, I and my co-workers have one major issue with upgrading. We are forced to use custom templates for all clients, due to the fact the 3cx base templates are not suitable for most businesses. This isn't too hard to fix on the template side of things, but changing templates for each extension after every upgrade has become a tedious process since the advent of version 15. In version 14 you could select the template from a drop down, click apply or okay and then continue with the rest. Now the process is to delete the template/MAC from the extension, click add, re-enter Mac address, select template, OK, check all other settings (IE phone webpage password) and then click OK. This greatly extends the upgrade time, as it is important to use the new 3cx approve template syntax. Is it possible to make this process like v14? Or possibly allow a mass modify via .csv import without having to delete all the extensions. This would make things much easier on the administrative staffing that actively sell and support 3CX.