INQ: RVT 2027 - New Manage Property Dialog

### Inquiry description

Hello everyone,

I'm currently testing the new "Manage Default Propertys dialog" for IFC export in Revit 2027.

In the dialog boxes for IFC Common Property Sets and User-Defined Property Sets, I can't find all the Revit parameters when I try to fill in the “Revit Property” column.

If I change the data type in the User-Defined Property Sets from “Label/Text” to “Length” or something else, no Revit properties are displayed at all.

I have a few more questions, such as: What is the Property Type (Single, Boundet, List, Table) used for?

I can't find anything about this in the Revit Help. Is there a more comprehensive description of the new features, and where can I find it?

I'm using the latest version of the IFC Exporter, 2027.0.1.1.

### Revit Version

2027.0.x

### IFC for Revit Addon Version

27.0.1.1

### Windows Version

11 25H2

Reproduce the Manage Default Property Sets dialog in Revit 2027.0.x with IFC Exporter 27.0.1.1, checking the Revit Property column for IFC Common and User-Defined Property Sets after changing the data type. Review the meaning of the Single, Boundet, List, and Table property types and identify the relevant implementation or documentation entry points; done means the missing-property behavior and feature description are clarified.

Written by the indexing model from the issue text.