Since the issue appears specific to a particular file, recover the file and test the recovered copy to see if the recovered copy shows the same behavior or not.
Also, make sure that you haven't inadvertently specified a page range when saving as PDF that omits the first page.
(Sigh.) That's exactly what happened. Being a word processor (though we don't use FMP at work), I have things I take for granted - like, if you change printing preferences when printing a doc, it will either keep those preferences the next time you print a similar doc (i.e. a doc in Adobe or Word) or, if you quit out of the app, the preferences will revert back to the preferences of the particular printer. Well, for some reason, FMP doesn't seem to work the same way. It has printer preferences that seem to stay even after you quit the app. Apparently, my preference was switched to Even Pages Only. Must've switched it to that way back in the past for some reason (I don't print/PDF from FMP all that often). Plus, unlike Word and Adobe, when you hit Print in FMP, a pop-up window shows it processing all the records in the file with a processing bar and a counting of all the records, which sort of gives the appearance it's actually printing all the files. Word and Adobe, conversely, only show a processing bar and a count of the pages that it's actually printing. I guess I was used to seeing that, so my brain was thinking it was the same way, so when I didn't have page 1, my brain fritzed. And I was so concentrated on not seeing page 1, I didn't even notice I only had half the records and that they were the even pages. (Sigh.) I must need more sleep. Sorry for bothering you all. Feel like a dolt. I'm a word processor, I've read one of those big, thick FMP manuals, my understanding of these apps is much higher than the average bear. But the answer I overlooked was small and basic. Ugh. Thanks so much for the response.