Try this:
(note: instead of using Endnote Export style, use RefMan [RIS] Export)
- Open the library in EndNote.
- In the Output Style drop-down list box in the Style Toolbar, click Select Another Style… to open the Output Style manager.
- Select “RefMan [RIS] Export” and click the Choose button.
- Select Export from the File menu.
- In the Save As dialog, name the file in the File Name field and browse to the desired file location.
- Confirm the File Type is “Text File (*.txt)” in the File Format drop-down field.
- Click the Save button.
- In EndNote Web, follow the Import instructions using “RefMan [RIS] Export” as the filter.
Hope this helps.
–Paul