Photos "Import All New Items" does not import all valid files, several import rounds on same folder are required
Photos Library got somehow corrupted and have to re-import all originals, which is several TBs. Doing this in smaller junks but still experience a weird Photos behavior. After selecting the import folder on my Desktop, I can review all Photos prior to the import and the button on top reads "Import All". After clicking, the import ran and to be sure all was imported, I repeated the same steps and again got a list of photos and videos from the folder that were not imported. Selecting "Import All New Items" will import more files but not necessarily all. After one or two additional import rounds of the same folder I am left with a bunch videos only. This time the button changes to "Import All Videos". After that, all files are imported.
Anyone any idea why Photos has this weird behavior of not importing everything? If I hadn't checked again for completeness, I would have been left with hundres if not thousands of files missing. Besides, Photos crashed several times and somtimes the import window to select the import source shows all files as greyed out but they behave like normal. Using the most recent version of Ventura and Photos.
Mac Studio (2022)