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Open replace Tabs Extension (reloaded)_1.03a.xpi in WinRAR
Go to chrome\locale\en-US and double click on prefs.dtd > more options > to open it with Notepad
Where it says "When opening multipe links at once, replace existing tabs"
correct spelling mistake
Then File > Save then and click on Yes in WinRAR
Works nicely but there's an issue: If a private window is also open it will send all middle-clicked bookmark folders from the parent window to the private window. I believe it is the extension misbehaving but submitted as Bugzilla #873699 anyway.