that's how I did it, exporting stp with colors and setting to Ap214.
However I did some additional testing today and found out, that the component tree information is there, as it shows when I open the in freecad exported stp file with a different CAD Software. It shows different component names, but the rest is there.
Therefore I suppose the problem is rather with edrawings viewer, it seems it does tread stp files created in freecad different than files from solid works, catia, etc. I found on their website that those programs are mentioned to be compatible. Although I do not understand how that can take effect since the stp format is per my understanding a platform independent format...
However thanks for your help anyway. I look forward to 0.18, from a first glimpse today it looks very nice