Import Photo - Missing Title

Thank you for your tipp.

I made following with exiftool:

Extract the metadata with exiftool -a -G1 -s image.jpg > image_metadata.txt:

* 01_ImportToAppleFoto_metadata.txt => that's the one from LR to import into AppleFoto

* the title is missing in AppleFoto!

* 02_ExportFromAppleFoto_metadata.txt => just export the imported file from AppleFoto

* differences:

** no differences at the specific metadata properties

** [IPTC]ObjectName: IPTC_Titel_bbee

** [IPTC]Caption-Abstract: Bildunterschrift_bbee

* change now the photo title and caption in Apple Photos - to find out which metadata property is used:

** title: Add_Title_in_AppleFoto

** caption: Bildunterschrift_bbee_changedInAppleFoto

* 03_ExportFromAppleFotoAfterChangeInAppleFoto_metadata.txt

* differences:

** [IPTC]ObjectName: Add_Title_in_AppleFoto <== is now as changed in Apple Photos

** [IPTC]Caption-Abstract: Bildunterschrift_bbee <== was NOT UPDATED and the changed caption is not exported in other property

Questions:

* Why is Apple Photos not import '[IPTC]ObjectName' when it uses that also for export?

* Why is Apple Photos not export Caption-Abstract?

Well I created now a complete new Media Library in Apple Photos and imported the photos.

Now it works. Why that happend?

Luckily it imports now also the title.

Thanks for your support.