It looks like we cannot suppress the save dialog in UI tests for CTS (yet) because the TranslationFileDownloadAction + command are quite different from ExportAction + command. Especially it looks like the main reason is, that no mime type is set in the TranslationFileDownload. Pls check how it can be aligned with the default ExportAction + commond. Once this is done, MGNLCTS-51 should be easy to resolve.