How to Update CW Article Attachments from version 2.x to 4.2+
1) Update the package
1.1) Go to Extensions -> Manage -> Install
1.2) Use dialog window or Drag and drop the ZIP package into the upload area
2) Publish Plugins
2.1) After installation, please go to Extensions -> Plugins and publish all CW Gallery Plugins
That is all. CW Attachments migration from Version 2 to Version 4 does not require any additional steps. In case of troubles please contact Support.