You can export all your decks into a csv file that is saved in in your "Exports" folder located in C:\Users%user%\AppData\LocalLow\Duelists Unite\YGO Omega (also accessible by clicking the customize button in Settings)
You can export all your decks into a csv file that is saved in in your "Exports" folder located in C:\Users%user%\AppData\LocalLow\Duelists Unite\YGO Omega (also accessible by clicking the customize button in Settings)