@catlover1019 -
The contents and appearance of the title page (as well as its presence or absence) are user configurable. So FFF can't depend on it being in any one format.
I experimented with putting metadata in hidden tags or in the epub metadata files, but those were stripped by Calibre during certain operations or flagged by epubcheck.
The solution we arrived at is the 'Saved Metadata Column'
discussed fairly recently here.