thanks for you answer.
I tested it with a test file. And it works if you generate the effect and change the patch without closing Daslight.
So i open a new file patch the fixture and generate a scene. If i want to change the fixture i delete the patch, import the new one and patch the new fixture. After that i saved and closed Daslight, reopened it and everything work fine.
But in my case the Daslight-file is an older one. So the generated scences are saved in a file before i open Daslight. So i opened Daslight with the generated scenes, import the new fixture, delete the old and patch the new. Daslight knows only which channels are used (they are ON), which DMX-Channel a Midi- or DMX-Mapper have and how many timesteps a scene have. But the value of the channels for every timestep are zero.
I think that Daslight have a problem if the file with the generated scence would be saved, closed, reopened and the fixture deleted and patched.
Hope you find a solution