I think it has something to do with ASC(as all my Arturia stuff stops working at the same time) and specifically the VST3 plugin. It doesn't seem to happen with the VST2 version. Sometimes, ASC won't log in to the server and all my plugins revert to demo mode. If I log in again using ASC(usually my login details are restored in the text boxes, but in this case I have to manually type my username and password again), normal functionality is restored while I'm in the project, but if I save the project, the plugin reverts to the default patch and won't restore the preset.