[BitBucket user: Sin-Di Lee]
[BitBucket date: 2017-03-30.09:27:00]

When we export a study with two equal name series via zip file format, only one of the series was exported successfully and the other was overwrote.

On the other hand, if we choose DICOMDIR format, both of the two series were exported successfully.

Environment:
* Orthanc 1.2.0
* Windows 10

[BitBucket user: Sébastien Jodogne]
[BitBucket date: 2017-07-05.14:14:48]

Hello,

I am not able to reproduce your issue. Starting with our [DummyCT.dcm](https://hg.orthanc-server.com/orthanc-tests/file/default/Database/DummyCT.dcm) sample image, let's create another series with the same name, and store it into Orthanc:

```
$ cp DummyCT.dcm DummyCT2.dcm
$ dcmodify --gen-inst-uid --gen-ser-uid ./DummyCT2.dcm
$ storescu localhost 4242 ./DummyCT.dcm DummyCT2.dcm
```

This results in one study, containing 2 series sharing almost all the same DICOM tags (they notably have the same name, i.e. the same "SeriesDescription"):

```
$ curl http://localhost:8042/series?expand
[
   {
      "ID" : "f2635388-f01d497a-15f7c06b-ad7dba06-c4c599fe",
      "Instances" : [ "66a662ce-7430e543-bad44d47-0dc5a943-ec7a538d" ],
      "LastUpdate" : "20170705T160359",
      "MainDicomTags" : {
         "SeriesDate" : "20070101",
         "SeriesDescription" : "AX.  FSE PD",
         "SeriesInstanceUID" : "1.2.840.113619.2.176.2025.1499492.7391.1171285944.394"
      },
      "ParentStudy" : "b9c08539-26f93bde-c81ab0d7-bffaf2cb-a4d0bdd0",
      "Type" : "Series"
   },
   {
      "ID" : "b51d89ab-b4db9f8f-66f823d4-6cc53b67-77cbce82",
      "Instances" : [ "ab8512cc-554f19c8-0227b576-ef28dd7e-49247d77" ],
      "LastUpdate" : "20170705T160359",
      "MainDicomTags" : {
         "SeriesDate" : "20070101",
         "SeriesDescription" : "AX.  FSE PD",
         "SeriesInstanceUID" : "1.2.276.0.7230010.3.1.3.8323329.2669.1499263439.858655"
      },
      "ParentStudy" : "b9c08539-26f93bde-c81ab0d7-bffaf2cb-a4d0bdd0",
      "Type" : "Series"
   }
]
```

Now, let's download and unzip the corresponding archive:

```
$ curl http://localhost:8042/studies/b9c08539-26f93bde-c81ab0d7-bffaf2cb-a4d0bdd0/archive > a.zip
$ unzip a.zip 
Archive:  a.zip
Created by Orthanc
  inflating: ozp00SjY2xG KNIX/Knee R/MR AX. FSE PD/MR000000.dcm  
  inflating: ozp00SjY2xG KNIX/Knee R/MR AX. FSE PD-2/MR000000.dcm  
```

As can been seen, there are 2 distinct folders, and nothing was overwritten.

Please provide sample files to reproduce this issue. In the meantime, I put this issue on hold.

[BitBucket user: Sébastien Jodogne]
[BitBucket date: 2019-01-25.09:06:08]

No follow-up by the reporter for almost two years, closing the issue.