LongerMD will install (or remove) a "MetaData" for Longer.  This will make it visible in Newton Connection.

You need to run LongerMD and tap the "Install" button.  After that you can remove the LongerMD package entirely.

If you create an NCK 2.0 Template for importing or exporting Longer data to NCK, you must click the "Options" button and change the field and record separators to characters that do not appear in the text.  Otherwise only part of the text may be imported or exported.  (I use the double-angle-open-brackets-Ç- for the field separator and the double-angle-close-brackets-È- for the record separator.)