Hi Alex, sorry no currently there isn't any way of stopping that from happening with STEP export and re-import. The repeating name is something in the STEP library that kicks in when instancing is not being used directly I think. I should be able to investigate it in v4 when I'm working on instancing.

Instead of using STEP format for a direct round trip, it's better to use 3DM format. That's the main file format intended to be used for projects you just want to save and load back into MoI instead of sending to other apps.

- Michael