Although both .qbr and .des file come from QuickBooks accounting software, it doesn't seem likely that a direct qbr to des conversion is doable. This mainly due the fact that these files serve different purpose and do not contain similar data, just different templates.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.