We are once again asking for non-breaking spaces and hyphens in citations.
This seems to be a recurring request among EndNote users. It was true for X4 and still remains true for EndNote 20.
I could not insert the link here as the EndNote forum claims it is broken.
The post links to other threads, but the links to those are unfortunately broken.
Specifically, for a citation that goes
Superscript [1, 16-19]
We should be given the option to do it all on one line. There should be a non-breaking space after the “,” and a non-breaking hyphen between “16” and “19”.