Hi guys, I made a custom map in world editor. I try to protect my map by removing war3map.w3u follow the guide. I do copy a map before remove war3map.w3u and store it long long time ago. Now I can not find my original map anymore, maybe I lost it when I fix my PC or something happens

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Does anyone know how to recovery war3map.w3u after remove it from the map?
I just wanna have all of my units data in war3map.w3u back

Kind regards.