I had created a reset plugin that allow to reset the quadcopters during the simulation. I have added this plugin to the sdf files of the quadcopters models. In which I have created 3 different sdf files for the 3 quadocpters. The problem is that I am only able to see the plugin in the new quadcopters and not in the original one, and I am only able to reset the new quadcopters. For me it seems that, the original sdf file in not read.