ICML export doesn't preserve the paragraph styles of endnotes.
1. Adobe InDesign 14.0.2
2. Export a story containing endnotes as ICML
3. Endnotes should be styled properly
4. Endnotes lose the applied paragraph style
5. UserVoice will not allow me to attach an IDML or INDD file. I can email it if needed.
What this means is that anyone using InCopy will lose the paragraph styling of their endnotes.
Thanks for reporting the issue. We are looking into it
John Whitney commented
The ICML export is actually fine, as are footnote import and exports. It's just the import that is losing the endnote paragraph styles.