Thanks for your comment. Please update the fixture library to ver1123 or later on rekordbox lighting mode. Once you should remove that fixture on "FIXTURE LIBRARY" screen. Then you search"Mega Bar RGBA" and re-mapping this.
As for the operating, please see the below manual.
- 3.4 Assigning your fixtures (LIGHTING mode)
- 5.5 Edit of scenes (LIGHTING mode)