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UliP
Known Participant
March 21, 2026

P: Synced files are not detected as duplicate.

  • March 21, 2026
  • 13 replies
  • 597 views

Short description:
When importing RAW and/or JPG files from my Fuji X-T5 into LrC, despite selecting the "Do not import possible duplicates" function, no duplicates are recognised and all images that have already been imported are imported into LrC again. A “-2” is appended to the file names.
Duplicates of my RAW files from my Canon R5 II are recognised as such and are not imported. All settings are the same in both cases.
LrC 15.2, macOS Tahoe 26.3, iMac with M3

LrC 15.2, macOS Sequoia 15.7.4, MacStudio with M4 Max

LrC 15.2 Windows 11 lasted Version

Long Description:

The problem I described above, whereby RAW files from the Fuji X-T5 are not recognised as duplicates during import and are therefore not imported, is a little more complicated than it seems.
One type of import works, but the other does not.

It works when I import the images as follows:
1. Connect the camera directly to the iMac -> import > all images that have not yet been imported are offered for import. Images that were imported in a previous session are not displayed for import, as they are correctly recognised as duplicates. This is therefore the correct procedure.

2. The same applies if I plug a card reader into the iMac instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

 

It does not work when I Connect the camera or card reader with the SD card to an iPad running iPadOS 26 and import the images into Lightroom on the iPad. Once the images have been imported into Creative Cloud, they will also appear on the iMac after a certain amount of time. If I now connect the camera or card reader with the SD card to the iMac as described in steps one or two, the import process will start. Images that were synchronised via the iPad in the first step and are now also on the SD card are not recognised as duplicates! As I wrote in my first message, the file is then additionally imported from the SD card and correctly appended with “-2” to the file name.

To further investigate the source of the error, I compared the duplicate files on a binary basis. They are exactly the same! So the files are not changed during import/synchronisation via Creative Cloud, but are somehow incorrectly "sorted" when synchronising the images from the cloud to my Desktop PCs.

 

To rule out problems with the iPad, I have further tested:

This time using LR 9.2 on a Windows 11 PC to upload to Creative Cloud and a Mac Studio MacOS 15.7.4 for direct Import.

It works when I import the images as follows:
1. Connect the camera directly to the Mac Studio -> import > all images that have not yet been imported are offered for import. Images that were imported in a previous session are not displayed for import, as they are correctly recognised as duplicates. This is therefore the correct procedure. Even if I rename the RAW during Import.

2. The same applies if I plug a card reader into the Mac Studio instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

It does not work when I connect the camera or card reader with the SD card to copy the RAW Files to the Windows 11 PC using LR 9.2 to upload the RAW to the Creative Cloud. Once the images have been imported into Creative Cloud, they will also appear on the iMac after a certain amount of time. If I now connect the camera or card reader with the SD card to Mac Studio, the import process will start. Images that were synchronised via the windows PC and also present on the SD card are not recognised as duplicates!

The files are also binary identical when using this method via am iPad.

The problem only affects my X-T5 files, not my Canon R5 II files!

The problem seems to lie with importing/synchronising via Creative Cloud.

 

Best regards,

Ulrich

      13 replies

      mppowell
      mppowell
      Participant
      May 20, 2026

      Just chiming in that I am also experiencing this problem. In my case, I am using a Nikon Z7, importing into LrC via a card reader using Lightroom Classic 15.3 on a Windows 11 desktop PC. Interestingly, this has not been an issue with this camera in the past. Following the same basic workflow described by Ulrich, I first imported the images onto an iPad via Lightroom Mobile, all images synced to Adobe Cloud. Then, after returning from my trip, I synced the images into LrC. After sync was complete, I inserted my memory card to make sure there were no missing files that failed to sync and none of the files on the card were detected as duplicates.

       

      After the sync but before the card import, I had updated from LrC 15.2 to LrC 15.3. Which I thought might be the issue. So I reverted to LrC 15.2.1, but the issue remains.

      Kazisvet Sociopat
      Kazisvet Sociopat
      Participant
      May 12, 2026

      case number is ADB-45113297-S8G4

      and see printscreen. On first is still pending sync and on second you can see that i cant edit any images becasuse a cant adjust any option 

       

      claracoelh
      claracoelh
      Participant
      May 9, 2026

      Você conseguiu resolver?  meu está acontecendo a mesma coisa. E os meus aparelhos são um 17 pro max e um notebook gamer dell  dos mais recentes. Mesmo assim, fica nessa sincronização e não sai mais. 

       

      Kazisvet Sociopat
      Kazisvet Sociopat
      Participant
      May 10, 2026

      No solution yet. I think Adobe has a synchronization issue with Apple devices, which then causes the entire Adobe account to crash. 

      CMass
      Community Manager
      CMassCommunity Manager
      Community Manager
      May 11, 2026

      Hey ​@Kazisvet Sociopat, 

       

      Sorry to hear you’re running into this sync issue. To better understand the troubleshooting that’s already been done, could you please share the case number associated with your previous support interactions?

       

      Also, are you currently using Lightroom Classic, or Lightroom as well? Please attach any screenshot of what’ you’re seeing on your end. 

      ^CM

      Kazisvet Sociopat
      Kazisvet Sociopat
      Participant
      May 9, 2026

      For over a week now, Adobe Support hasn’t been able to figure out why the Lightroom app on my iPad Pro (M4) suddenly stopped working. They only gave me instructions that I’d already found online. Then today, they told me to update the desktop version of Lightroom Classic. And the result? The desktop version stopped working too. And Adobe Support? Silence. They have no solution. 
      My entire Adobe Cloud isn’t working. It constantly tries to sync files and keeps showing “Pending,” which prevents me from editing photos in any way—whether in the app, the desktop version, or the web version. I’ve already reinstalled my entire iPad three times and Windows once, and nothing helps. The problem is clearly on their side with synchronization, but they act as if the problem is on my end. So I tried installing Lightroom on a brand-new iPhone 17 Pro, and the result is the same—when I try to import any photo, the sync wheel just keeps spinning and says "Pending"... and nothing happens even after hours. Any advice? 

       

        johnrellis
        johnrellis
        Legend
        May 4, 2026

        [View this post in your web browser. It contains formatting and images that don't appear in email.]

         

        ​@UliP The problem seems to have been resolved with the update to LrC 15.3. 

         

        I just tested the bug recipe in LR Classic 15.3 / LR 9.3 / Mac OS 26.4.1 and get the same incorrect results :-< 

         

        johnrellis
        johnrellis
        Legend
        May 4, 2026

        ​@Rikk Flohr_Photography, ​@Sameer K has this been acknowledged internally?  It’s still residing in Questions, though Sammer said he was sharing it internally for review.

        Rikk Flohr_Photography
        Community Manager
        Rikk Flohr_PhotographyCommunity Manager
        April 13, 2026

        A note from engineering regarding this thread: 

        “Fuji files don't have millisecond info in the capture time. So, unless the files have the same name and same capture date/time, LrC will not detect them as duplicates.”

        Rikk Flohr: Adobe Photography Org
        U
        UliPAuthor
        Known Participant
        April 13, 2026

        As I wrote before, the files have identical names and are binary identical!

        So the problem occures during the import via cloud and direct import.

        John R. Ellis was able to er-enact this too! Please pass it on to the developers again!

          Sameer K
          Community Manager
          Sameer KCommunity Manager
          Community Manager
          March 26, 2026

          Thanks for the detailed report. I've shared this with the team for review.


          Best,
          Sameer K

            U
            UliPAuthor
            Known Participant
            March 31, 2026

            Thank you for your support!

            Unfortunately, the problem now also occurs with my Canon R5 Mark II RAW files! (LrC 15.2):

            File imported via Cloud:

            R52_3790.CR3 => dateTimeOriginalISO8601 2026-03-31T14:23:12.250+01:00

            File imported directly to Mac:

            R52_3790-2.CR3 => dateTimeOriginalISO8601 2026-03-31T14:23:12.25+01:00

             

            johnrellis
            johnrellis
            Legend
            April 1, 2026

            Sure suggests that the two code paths have differing rules about trailing zeroes in the string representation of capture time.

              johnrellis
              johnrellis
              Legend
              March 26, 2026

              Import does not always detect duplicates correctly if one of the photos has already been synced from LR Cloud.

               

              To reproduce with Lightroom Classic 15.2.1 / Lightroom Desktop 9.2 / Mac OS 26.2:

               

              1. Save the two attached raws to a folder on your desktop. 

               

              2. Import the two photos into Lightroom Desktop. Wait for them to sync down into Lightroom Classic.

               

              3. In Lightroom Classic, do File > Import and navigate to the folder from step 1.  Select the option Don’t Import Suspected Duplicates. Observe that Import thinks DSC04332.ARW is a duplicate (correct) and DSCF0184.RAF is not (incorrect): 

               

              Click Import to complete the import.

               

              4. Using the SDK, e.g. using the Debug Script command of the free Debugging Toolkit, observe that the metadata field “dateTimeOriginalISO8601” of the photo synced from LR Cloud contains fractional seconds “.000”, while that field of the photo imported directly from the folder does not:

               

              This hints at an internal inconsistency in how LR is representing capture time.

                johnrellis
                johnrellis
                Legend
                March 26, 2026

                ​@Sameer K, here are the two photo attachments that were lost by the Gainsight forum platform when my bug recipe was merged here.

                  johnrellis
                  johnrellis
                  Legend
                  March 24, 2026

                  [View this post in your web browser. It contains formatting and images that don't appear in email.]

                   

                  What about this question? In LR Classic’s Import window, are you selecting the Devices or the Files section of the Source panel?

                   

                  U
                  UliPAuthor
                  Known Participant
                  March 25, 2026

                  Hi John,

                  to clarify, I've drawn a quick diagram:

                   

                    johnrellis
                    johnrellis
                    Legend
                    March 25, 2026

                    That detail is helpful.

                     

                    In steps 3 and 7, are you selecting the Devices or the Files section of the Source panel?

                     

                    johnrellis
                    johnrellis
                    Legend
                    March 24, 2026

                    [View this post in your web browser. It contains formatting and images that don't appear in email.]

                     

                    it really doesn’t matter whether I import the images via the camera – PC USB port or via an SD card in a card reader connected to the PC. They are generally not recognised as duplicates.

                     

                    Hmm, that seems to contradict what you wrote in  your first post?

                    2. The same applies if I plug a card reader into the Mac Studio instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

                     

                    I don’t think I’m understanding.

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