Copy presentation slide to another deck

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How do I copy a presentation slide and to another deck? Seems that this rather basic, but important feature is not available. Is there a workaround of sorts?

OS version: Zorin Linux 16.1
App version: ONLYOFFICE Desktop Editors version 7.2.1.36 (deb package)
Downloaded from: ONLYOFFICE website

Hello @Tiger3000
Do I understand it right that you want to copy slide between pptx files?