Sure Gunter,
So exporting out of MoI, “styles” should be your “material assignment” and “names” are like an “object grouping” when you get to your external app.

Some handle either/or a little differently and have methods to do things “because” of one or the other.

To avoid having to learn ALL intricacies of ALL external apps, i just make a habit of doing BOTH of those things which makes external management easier…

Take care.