After the export in Lexicon DJ with Waveform the Waveform in Engine is missing and I have to analyze again. How can I solve this?
You have to analyze your tracks in Engine the first time you sync them to it, to add the waveform data. The waveform from Lexicon is not the same as the Engine waveform.
OK, will Engine overwrite the other information like tempo und CUEs?
It won’t overwrite cues but tempo (beatgrid) will be overwritten unless you turn on beatgrid locks, on the Sync screen in Lexicon