This is still losing data on note merges. Set your sync settings to "Enable on demand sync." Set "purge note content" to whatever number of days you want. Go to another device (iOS, Web, Mac, another Windows PC) and upload 4 notes, all with 1MB or more attachment. Sync this PC Highlight all 4 notes by selecting note 1, and shift-click-note 4 and merge. Evernote will note ensure the note content is downloaded before merging, so it will only get the content
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