I have used Metadata Model to Quantum to set up custom properties, but I can't see them when I look in MDM Explorer. Where are they and why can't I see them?

Data Model > Frequently asked questions > I have used Metadata Model to Quantum to set up custom properties, but I can't see them when I look in MDM Explorer. Where are they and why can't I see them?

In Data Model 2.5 and later, Metadata Model to Quantum and the Metadata Model to Quantum component write the card, column, and punch custom properties to the DataSourceProperties collections. This means that you can see them in MDM Explorer only when the same DataSource object is set as the current DataSource. For more information, see Viewing custom properties in MDM Explorer.