so, how do i export the whole aperture library in to an EXSISTING Photos library? I have used Photos for some time now, and i think its okei, i get all my pictures at al devices, so i was thinking, maybe i should import my aperture library also? I rly miss many off my pictures from aperture, i almost never open aperture anymore :( When i try to Export the library file, it is “gray out”, i can’t select it… I can make a new library with my aperture library file, but is seems like i can import the who file!? and if i make a new library it will not sync with my iPad and iPhone. Is there any way i can export this to my existing library? or is this just another fuckup from apple?! sorry my english, its not my strongest language :)
Unfortunately you can't. There's currently (and I say currently because hopefully this will be addressed) no way to import an Aperture, iPhoto or even Photos library into an existing Photos library.
The common advice is to merge all Aperture and iPhoto libraries first using Aperture, then migrate that to Photos.
The only way to do this is using iCloud, so this requires some bandwidth and possibly a large iCloud account.
Some things to consider…
The alternative is to just wait and see if Apple adds this capability in a future release.
@PhotoJoseph
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There is a 3rd party tool that can merge Photos libraries. PowerPhotos from Fat Cat Software got an update that adds the ability to merge Photos libraries. When it was first released it couldn’t merge but eventually the author either figured it out or Apple changed something to make it possible.
It has a free trial so you can check it out without risk. It cost $29.95 for a new license or $14.95 to upgrade if you have their previous tool for iPhoto (iPhoto Library Manager 3). I haven’t used this tool so I’m not endorsing it - only providing the info.
Thomas