Is it possible to cancel line and add new line in a PO at the same time?

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Currently, we found that cancel line itself will trigger one change order. If that is the only line of the PO, it will cancel the PO too. If we edit the PO and add a new line, then we cannot cancel line as system seems not allowing this. Is there any way that we can add new line and cancel line at the same time, using the same change order? If not, what is the best practice for this case?