If you want to use the settings from Oxygenstandalone distribution in the Eclipse plugin one just delete the file with the Eclipse plugin preferences, that is [user-home-folder]/Application Data/com.oxygenxml.author/oxyAuthorOptionsEc12.2.xml on Windows / [user-home-folder]/.com.oxygenxml.author/oxyAuthorOptionsEc12.2.xml on Linux, start Eclipse and the Oxygen standalone preferences will be automatically imported in Eclipse. The same for importing the Eclipse plugin settings in Oxygen standalone: delete the file [user-home-folder]/com.oxygenxml.author/oxyAuthorOptionsSa12.2.xml on Windows / [user-home-folder]/.com.oxygenxml.author/oxyAuthorOptionsSa12.2.xml on Linux, start the Oxygen standalone distribution and the Eclipse settings will be automatically imported in Oxygen standalone.