You're right. It's an issue with the import modules of the 2015 versions of our software. Here's an example of one object that was imported into MOI via step format (the format the client delivers) :

"D_1338_00IAM-00-10S14P/LIC18650-TBD PCM PC: 724189IAM-03-METAL PLATE NIL1:2: 724189IAM-03-METAL PLATE NIL1: D_1314_41IPT-03-METAL PLATE NIL1:1: D_1314_41IPT-03-METAL PLATE NIL1: Volumenkörper1"

As you can see, not only awful long names but a lot of extended chars as well. One is interesting (Volumenkörper1) because its supposed to be Volumenkörper (a german word. Client is german).
Not sure if ö got replaced by ö because of the clients export module or if was translated by MOI on import.

If you can provide a script to remove extended characters, that would be indeed very helpful! Thanks a lot!

Sven