data loss between setup and release

When OpenScript() of the kofax release gets called I read all the Indexfields, BatchFields and BatchVariables from the ReleaseData object and store them to dictionaries.

        Dictionary<string, string> indexFields = new Dictionary<string, string>();
        Dictionary<string, string> batchFields = new Dictionary<string, string>();
        Dictionary<string, string> batchVariables = new Dictionary<string, string>();

        foreach (Value val in documentData.Values)
        {
            if (val.TableName.IsEmpty())
            {
                string sourceName = val.SourceName;
                string sourceValue = val.Value;

                switch (val.SourceType)
                {
                    case KfxLinkSourceType.KFX_REL_INDEXFIELD:
                        indexFields.Add(sourceName, sourceValue);
                        break;

                    case KfxLinkSourceType.KFX_REL_VARIABLE:
                        batchVariables.Add(sourceName, sourceValue);
                        break;

                    case KfxLinkSourceType.KFX_REL_BATCHFIELD:
                        batchFields.Add(sourceName, sourceValue);
                        break;
                }
            }
        }

documentData.Values is empty. When debugging it with a loop

        documentData.LogError("-------- SAVED VALUES --------");

        foreach (Value val in documentData.Values)
        {
            documentData.LogError("######");

            documentData.LogError(val.SourceName);
            documentData.LogError(val.Value);

            documentData.LogError("######");
        }

I get no entry logged. Before calling the setup Apply method I save all the data I want to access in the release.

        releaseSetupData.CustomProperties.RemoveAll();

        releaseSetupData.CustomProperties.Add("username", cobraService.Username);
        releaseSetupData.CustomProperties.Add("password", cobraService.Password);
        releaseSetupData.CustomProperties.Add("webserviceRootUrl", cobraService.WebserviceRootUrl);
        releaseSetupData.CustomProperties.Add("templateId", selectedTemplateID.ToString());

        releaseSetupData.Links.RemoveAll();

        foreach (IndexField indexField in releaseSetupData.IndexFields)
        {
            releaseSetupData.Links.Add(indexField.Name, KfxLinkSourceType.KFX_REL_INDEXFIELD, indexField.Name);
        }

        foreach (BatchField batchField in releaseSetupData.BatchFields)
        {
            releaseSetupData.Links.Add(batchField.Name, KfxLinkSourceType.KFX_REL_BATCHFIELD, batchField.Name);
        }

        foreach (dynamic batchVariable in releaseSetupData.BatchVariableNames)
        {
            releaseSetupData.Links.Add(batchVariable, KfxLinkSourceType.KFX_REL_VARIABLE, batchVariable);
        }

Important:

1. The data gets saved during setup because when opening the configuration a second time, I can access the data from previous configurations. When loading my form I could do

       CustomProperties props = releaseSetupData.CustomProperties;
   
       if (props.TryGetValue("username", out string username))
       {
           edtUsername.Text = username;
       }
   

and get the previous configured value.

2. Whenever I access my export script in the administration module I get this error

2018-12-21 08:54:20, 0x00000018, 0, 0x00000000, 0x00000000, 0x00000000, C:\Program Files (x86)\Kofax\CaptureSS\ServLib\Bin, Admin, WINPQQ02E45HKM:Sess 2, 11.0.0.0.0.397, , 130, The SetupData object could not be released while closing the script. ScriptName = Custom Export Script, Version=10.2, Reference Count = 3., ,

Is something wrong or missing?