@holch
However, as there is no way to create a questionnaire in QueX and to export it, it wouldn't make much sense to implement the import of QueXML into Limesurvey, because the questionnaire was created by Limesurvey in the first place (or maybe by hand, but...).
This is not correct.
queXML files can be imported in to Limesurvey using the queXML to Limesurvey stylesheet. This is included in the
queXML download package. Otherwise, there is a web based interface you can use to apply this stylesheet to a queXML file called "
Generate a CSV import file for Limesurvey"
Due to this ability to generate a Limesurvey CSV import file, there is no direct import in Limesurvey. Also, it is to avoid Limesurvey users choosing queXML as the format to save their Limesurvey instruments, as it is not a complete description but a generalised description applicable to multiple modes. queXML was implemented separately to Limesurvey (or phpSurveyor as it was then) and it is possible to create queXML files using an XML editor.
Also, queXML does not describe the question style or formatting as it leaves this up to the data collection system. This means that the questionnaire can be described once for multiple modes (i.e. paper based, web based, CATI) and as long as the collection software collects the data to those specifications, there can be a single data set over multiple modes.