Heiya,
today I wanted to import an XML file to a wiki. The import failed because I did not add an interwiki prefix to the new and probably nifty interwiki prefix field which I now got in MW 1.31.x for Special:Import. The respective help page linked [0] does not mention this new interwiki prefix field.
So what do I have to enter here?: The interwiki prefix of the wiki I exported the XML file from or the interwiki prefix of the wiki I import the XML file to, an arbitrary string or ... What do I have to do if the export was made from the same wiki I want to import the file to (This case is how I acutally stumbled into this.)?
Thanks for your time and cheers,
Karsten