Conversion of QCT files

Following the demise of MMTracker, is there a simple means of importing QCT map files into OruxMaps? Alternatively, is there a 3rd party conversion utility that will convert them into something that OruxMaps understands? I have about 50 self-scanned maps that I really would prefer not to have to re-calibrate! I have looked at Global Mapper as a possible conversion program but that is both a) expensive and b) complex.