pub-date not displaying when pub-history isn't present
In the production TOC for ahrqlsr, pub-history date is displayed under the contrib list. For chapters that does not have pub-history tagged, the pub-date is displayed instead.
https://www.ncbi.nlm.nih.gov/books/NBK568855/
'Published: ' is the pub-history created date
'Published online: ' is the pub-date
I loaded the chapter 'Living Systematic Review ... Pain: Surveillance Report 4 ..' into a test book and there is no date.
I checked the TOC.xml (see attached ahrqlsr_coko_pub-date_TOC.xml) and the pub-date is available as an pi ?epub 20220601?.
This is tagged as <pub-date publication-format="electronic" date-type="pub"><month>06</month><year>2022</year></pub-date>
within the book-part-meta of the converted XML.