Can a hydraulic model be detached from a DWG when integrated with AutoCAD?
Currently there isn't a direct option to detach a Bentley Hydraulic Model from a DWG, but you do have a couple of options.
Option 1: Export to DWG. The exported DWG can then have a different hydraulic model imported. You could delete the hydraulic model elements/linework first before performing the export. This can be done by clicking the "select all" button under the Product name menu item (for example the "StormCAD" menu), then right click in the drawing and choose "erase". You'll want to do a save-as immediately afterwards so that you do not delete the elements from the hydraulic model database (in case you still want to use the model in the Standalone version). You will then be left with a DWG that only has the non-OpenFlows product linework.
Option 2: Create a new DWG and reference in any original linework. After referencing the original DWG, then you can "Bind" it to the new DWG if needed.
What files are necessary to work with a WaterCAD for AutoCAD drawing?
Saving a hydraulic model when using the AutoCAD platform (ie. integrated)