While recently citing elife articles I realised that the page numbers field was empty for most of the articles. I know that elife page numbers are not like traditional page numbers but an e-record number but even that won’t show for relatively old articles. Also, updating references won’t help.
yes, I have noticed that too. Did you try to not have any auto numbering settings on in the output style (the ones that change 121-131 to 121-31, for example)? I think that is what messes with it.