While generating Isometrics, a pipeline containing reducing flange from 'Line Pipe Module', annotation shows twice in isometrics, To remove duplicate annotation below are the steps. Refer below image.

     

Steps to Accomplish:

1. In Class Editor, Open “OpenPlant_3D_Supplemental_Isometrics_Isoextractor.01.04” schema.
2. Search class “Filler_Flange”.
3. Change class name from ‘CT_FLANGE’ to ‘CT_FITTING_STRAIGHT’ under Isometric component tab, refer image below.

        

5. Save schema and verify the results. Single annotation for reducing flange will be seen. See image below: