'Do not import duplicate images' does not work

For some weird and frustrating reason, the 'Do not import duplicates' checkmark doesnt seem to be functioning. Over the past few weeks, I have ended up importing duplicate and triplicate copies of images even though the checkmark on 'Do not import duplicate images' is checked. I dont know why this is happening.
My import settings are customized, but then this was done long before i started facing this problem.
I usually dont delete images till my card is full, and this results in duplicates before everytime I import images from a new shoot, images from the previous shoot also get imported, unless I manually deselect them.
Any help on this would be appreciated.

Leonie,
Yes I rename my files while importing. But I have been doing that for a while now, didnt face this issue earlier. Not sure what you mean by 'Signature'?.
I upgraded to ML a few days ago, so my sys config is MacOS 10.8 & Aperture is 3.3.2 (I've been facing this issue even before i upgraded to ML, so I dont think its related to ML).
I always import directly from my camera (i.e. card) and this issue seems to have cropped up somewhere after the release of Aperture 3.3.
Also, I have sent f/b to Apple on this issue (n vow, they seem to be collecting customer profile data thru this f/b. Look at the number of irrelevant questions they have).
cheers, Bhaven

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Do Not Import Duplicates simply does not work any more

HI There
I've been using Aperture from the beginning, and this always worked before:
I have a single folder for each month's imports
1. copy files via card reader to folder for month on firewire 800 drive
2. load Aperture, choose Import, Leave Files where they are then select do not import duplicates - it imports files
Later I will download another card to the same further, and follow 1 & 2 above.
Now, no matter how many times I do it, it simply shows ALL the files in the folder, and will import them all again, creating new versions each time.
Clicking on and off the do not import duplicates check box has no effect whatever.
What's UP!
all the best
JonoSlack

I have also just run across this Jonathan. This feature always worked before for me. I had some previously imported images on my CF card in camera along with new ones and it now takes all images even with the "Do not Import Duplicates" checked.
Matt
Message was edited by: Matt Leader

Do not import duplicates-BUT DOES

I had exported all of my images that had Keywords added to them to 'start over' my library. I imported those back to establish my base library. All is good. I then went back to my non-keyword tagged images, many of which are those that were imported with keywords. Even though Do Not Import Duplicates is checked, duplicates get imported.
DSCF1046.jpg (tagged with 'Me') is in library, go to folder with the un-tagged image DSCF1046.jpg (I don't shoot RAW so it's not that issue) and it gets imported.
Is it not considered a duplicate because one has IPTC data embedded and the other doesn't even though they are named the same?
OS 10.6.4, Aperture 3.0.3

Duplicate detection is imperfect. It usually works, with the proviso that you must be importing into the same project where the files already exists. That said, it's not 100% perfect.
My suggestion if you're importing from the same card multiple times is to use "check none" and then manually select the files you want to import. Takes a few seconds but then you know the right thing will happen. I do this all the time when I'm traveling and I want to have a couple backups of my images in a couple places: On the memory card is one of those backups so I shoot until I fill them; often across multiple shoots and downloads.

Do not import duplicates not working

How can I import only new photos from memory card? the do not import duplicates checkmark does not work anymore.

I reset the import settings to defaults, thinking I might have changed something inadvertently ( I am new at this), and now the checkmark for do not import duplicates cannot be checked ( for the past two weeks it could but it would still import all the duplicates)
This looks like there may be a problem with broken user preferences in your user account.
Test, if you can set the "Do not import duplicates" flag, if you sign in as a different user. Enable another user account for testing in the "System Preferences > Users& Groups", e.g. the "Guest" account, if you do not have a test account. If the "Do not import Duplicates" is working well in this account, we'll know, that broken preferences files or other setings in your current account are probably causing this.
Then try to remove your user preferences as described in this document : the Apple Aperture trouble-shooting page.
You user library may still be hidden, as is the default in Mavericks: To open your hidden user library:
Select the "Home" folder icon (the little house) in the Finder's sidebar and press the key combination ⌘J to open the "view options".
Enable "Show Library Folder".
Then open the Home folder and open the Library folder inside and navigate to ~/Library/Preferences
These files and folders need removing:
~/Library/Preferences/com.apple.Aperture.plist
~/Library/Containers/com.apple.Aperture
After removing the Preferences files it is essential to log off and on again, or to restart the computer, before you launch Aperture again. Otherwise it may not take effect.
-- Léonie

Do not import duplicates - does not work

After several Aperture and MacBrook Pro updates, Aperture does not recognozise duplicates when I check off "do not import duplicates". It has worked well in the past. Any ideas?
Tks

I have the same issues. i think its a 'known' bug just hope its addressed in the next release.
I think the Aperture product manager needs a kick in the pants.

How does, Do Not Import Duplicates, work?

Here's what I found in the user manual. (how about that, I read the manual before someone pointed it out to me)
Aperture checks the filename of the master to determine if an image is a duplicate of one in the library.
Aperture is checking the filename of the Master. So, if you always rename Masters, then this feature wouldn't actually do anything. Correct?
What if you are importing an image which happens to have the same filename. Perhaps you've reset your camera's naming feature. Or your importing from a different camera (probably same manufacturer) that happens to be a the point of overlapping, default names?
Does it actually check the entire Library? I wondered since the option is in the section where you are picking the Project to store them in. It makes me think it's only looking in one particular Project.
Either way, I'm not sure this is such a great feature. I'd rather have duplicates, as opposed to skipping files it thinks are duplicates.
What's the best way to utilize this feature?

The user manual says that Aperture checks the filename. I'm not exactly sure what that means.
I imported a couple of images. I changed both the Version and Master name. Then, I used the Batch Change command to change the time zone, so the times were different.
I then tried to re-import the same images. If I checked Do Not Import Duplicates, Aperture hid the images I just imported. If I unchecked it, I could import the images. I left it unchecked and imported the images.
I wound up with duplicates. Even though the Version name, File (Master) name and Date fields for both duplicates were different.
So the feature appears to work pretty good.
My issue is, since I don't know how it works, I'm not sure how to use it.
My concern is that if it's checked, Aperture hides duplicates, so you have to uncheck it to see what Aperture thinks are duplicates. It would be nice if Aperture showed the images it thought was duplicates, but had them grayed out with no way to check the import box.
It would be nice to know how this feature works. How does Aperture decide what makes an import you are about to import a duplicate, or not?

"Do not import duplicates" doesn't work

Hi everyone,
I've been using Aperture 3.5.1 for a while and the import process always worked fine, until suddenly the "Do not import duplicates" feature stopped working. Now any time I plug my iphone or insert the SD card the photos I've already imported appear again on the import screen.
The funny thing is that if I open the library with iPhoto and import the images with it, the duplicate pictures do not show up, so it's definitely an Aperture issue. For the time being I'll keep importing stuff via iPhoto and then switch to Aperture for editing, but I'd like to get this thing fixed. I filed a bug report on Apple's bug reporter last week but got no reply.
Cheers

Well, it appears that if you
- import an image
- change your system time zone (going west, if that matters)
- plug the device again
then Aperure doesn't recognize you've already imported that image. I don't see how this could be considered a normal behaviour, I call it a bug (a bug iPhoto doesn't have btw).
You left something out: How did you set the Time Zone brick in Aperture's Import panel, when you made that test with a differnet Time Zone? Aperture uses the current system time zone to interpret the time stamps on the images as the default time zone, when you do not set the "camera time" and "actual time" correctly in the Import panel. This way you will import the images with a different time stamp, and then they will be different for Aperture. The date/time of the file are differnet, the file will be considerd to be different. But you can prevent that by setting the time zone correctly in Aperture's Import panel.

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A good general step for strange issues is to renew the iPhoto preference file - quit iPhoto and go to "your user name" ==> library ==> preferences ==> com.apple.iPhoto.plist and trash it - launch iPhoto which creates a fresh new default preference file and reset any personal preferences you have changed and if you have moved the iPhoto library repoint to it. This may help
This does not affect your photos or any database information (keywords, faces, places, ratings, etc) in any way - they are stored in the iPhoto library - the iPhoto preference file simply controls how iPhoto works - which is why renewing it is a good first step.
LN

With previous editions of iTunes for Windows, I could play a CD at the same time as it was being imported. That does not work anymore. Why not, and is there a way to do both with the most current version?

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"Do not import duplicates" is not working

The "Do not import duplicates" box is checked for all imports but is not working. This is both for my Nikon DSLR, my Canon S-95 and my iPhone. This was happening with both Snow Leapord and Lion as operating system. I have been using Aperture since the first release and only in the last few months has this been an issue. Any thoughts?

There's a known (and old) bug when duplicate identification fails on photos
that have been imported from another catalog.
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Do Not Import Duplicates

Hello,
We are using Aperture 3.3.1. and we noticed that the import system with 'Do Not Import Duplicates' ins't working very well.
When we put some pictures from our SanDisk CompactFlash 8GB card on our iMac with Aperture we first have to wait to finish the preview function.
Than after we imported the images we used a second Sandisk 16GB SDHC card, here are the same images but we made a few on this card tha is not on the Compact Flash Card. But when we put our SDHC card in the reader Aperture shows all the images?? It is not regonize that the images from the CompactFlash card are the same as on the SDHC card?? Very strange, but also very ignoring.
We use a Canon EOS1Ds Mark III and when we make pictures we use the option 'separate storing', that will give us the safety of our images.
But sometimes 1 card is full and the camera go's on the one who has left the most storage.. That's how we come with this problem in Aperture.
Does somebody has the same experience? And is there a solution?

You may have a problem with a corrupted preference file. If you have the "Do not import duplicates" option checked, Aperture should not show the files again, that it already imported from the card.
I'd suggest you quit Aperture, if it is running and remove the file "com.apple.Aperture.plist" from the Preferences folder in your user library to the Desktop and then try if the problem still persists.
In MacOS X Lion the user library is hidden. To open it, use the Finder's "Go" menu. Press the "Go" menu entry in the main menu bar and hold down the "options" key, until "LIbrary" appears in the drop-down menu. Select the Library, then navigate to the "Preferences" folder, and remove "com.apple.Aperture.plist".
Report back, if this does not help.
Regards
Léonie

"Do not import duplicates" IS importing duplicates

Why does "do not import duplicates" no longer work in Aperture 3?
I've upgraded to 3.1.1.
This "pro" app is making managing my photos really a pain in the rear.
What. Is. The. Deal?

This is one of those bizarre things. With my Cannon 40D as long as I don't rename the actual file name (not the version but the actual master file name) *Do not import duplicates* works like you would expect. The project I import into has nothing to do with it. It can be the same project or a different project, works in both cases.
Now one thing I did notice with my camera. It has different numbering modes you can set. One of them, manual reset, creates a numbering system that emulates a directory structure. That is each time you reset the file numbers it changes a prefix on the file name. If I select this mode somewhere in the import stream the file name is getting changed. So in this case it appears as if Aperture is importing dups but in fact the file names are different from import to import.
I urge you to try a quick experiment if you haven't already done so. Format your card, create a new empty Aperture library, take 3 or 4 pics and import them. The as soon as processing finishes reimport with *Do not import duplicates* checked. If Aperture imports the images again compare the actual master file names.
As I type this another thought comes to mind. I have all managed images, it is possible that it may not work with referenced images. Those who report this as not working do you have managed or referenced images?

'Do not import duplicate images' does not work

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