Although both .xej and .xel files originate from Microsoft Expression Encoder, it is unlikely that some kind of xej to xel conversion is possible, considering that these are some kind of settings. If you have issues with these files, perhaps contact Microsoft support, but it is certain that such conversion is not possible.
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.