Addition of ext2200 ruins the template - EPM

If I use a grandstream template and program a phone all is good. When I then go to advanced options (blue pencil) and attach a sidecar that has been programmed in the template the whole phone loses all button programming. Still registered though? And this had been working fine until about a week ago. any help would be greatly appreciated.

You can open a commercial support ticket at and they can check to see if there is a bug.