The Remove Project option, Removes a Drainage and Utilities project from the active design model in the design file. Before using this tool, any Drainage and Utilities elements must be deleted from the project. If the design file contains more than one Drainage and Utilities project, then open a view for the relevant design model, ensure that any Drainage and Utilities elements have been deleted, then use Remove Project. Repeat this process for all design models that have a Drainage and Utilities project. This command will not work if the view with focus shows a sheet or drawing model.