Automatic Relationships are creating "Both" relationships

[BraneyBI]

In the November release, Power BI Desktop is creating "Both" (bi-directional) relationships when a single fact table is detected in the data model.  The default should always be "Single" due to performance issues (and has been for several months).  Most modelers do not fully recognize the impacts that bi-directional relationships can have on a Data Model.

[v-haibl-msft]

@BraneyBI

In Power BI Desktop, Both is the default direction. If you’d like Singe to be the default one, you can create an idea in http://ideas.powerbi.com to get votes. Maybe we can have an option to change the default direction in the future.

Best Regards,

Herbert