current and slackpkg (missing some updates on my PC)

I had my main desktop PC reinstalled with current a while back, so this is a quite recent installation of current...

After I asked if digikam needed an rebuild, I was noticed upon that I had missed an update of ffmpeg-5.1.4 to build version 3.

That was true, but I could not find ffmpeg at all when I used slackpkg to search for what version installed (and list any updates if any found).

I manually updated ffmpeg by downloading the latest package/version and ran upgradepkg

So I went through all files in /var/lib/slackpkg/

ChangeLog.txt contains "ffmpeg-5.1.4-x86_64-3.txz: Rebuilt"
ChangeLogs/slackware.txt "ffmpeg-5.1.4-x86_64-3.txz: Rebuilt"
PACKAGES.txt "PACKAGE NAME: ffmpeg-5.1.4-x86_64-3.txz"
install.log Nothing related to ffmpeg found
pkglist "slackware64 ffmpeg 5.1.4 x86_64 3 ffmpeg-5.1.4-x86_64-3 ./slackware64/l txz"

If I run slackpkg search ffmpeg, the only packages listed are
[inst] slackware64 : ffmpegthumbnailer-2.2.2-x86_64-4
[inst] slackware64 : ffmpegthumbs-23.08.4-x86_64-1

So my questions are, what is wrong and how did it happen?