Save it under a new name. right click inside *Plant 3D Drawings* where you want it located then *Copy Drawing to Project...* then remove unwanted duplicate piping from both drawings. you can save some time by deleting unwanted piping THEN saving under a new name, but you risk losing some piping if you save instead of save as. ( it happens )
An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you know and what you don't.
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"Do or do not... there is no try"
Master Yoda.
![Autodesk Design & Make Report](https://forums.autodesk.com/t5/image/serverpage/image-id/1350519iCB55845EBFC43016/image-size/large?v=v2&px=999" "Autodesk Design & Make Report")
