Sorry, I made a typo on the example above, the end markers are actually missing from Edit4, (not just there, but black.) The RTF code in the file reflects this also, so it appears to be a problem when saving.
Also, it appears after further examination that after saving the document, the end markers are missing from every edit field that is the last in each line. For every other in the line, the end markers are now black instead of red & will not merge correctly.
This happens whether I use SaveToFile(), or click the Save Icon in the toolbar.
Thanks.