OpenPlant Modeler with managed workspace in multiproject datasource

Hi,

I'm using OPM SS5 with PW SS4, where i have multi project datasource. Schemas are loaded from metric project (Bentley sample). Now I'm little uncertain that can I use mixed metric piping specification in metric project.

Do I have to create a new datasource and load schemas from MMetric project or can I just create a new MMetric project in my existing datasource?

Pekka