When pasting an existing chart into a word document, you can choose to using the paste options button.

When pasting an existing chart into a Word document, you can choose to control how text appears when you paste it using the Paste Options button.  The Paste Options button enables you to decide whether you want to paste the data as you originally copied it, or to change the style so that it fits the style of the document into which you are pasting the data, or to apply specific characteristics to the data, based on the content.

Embed the chart using the paste option button to paste an existing chart into Word document

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