[help please] tagging problem

Hi All,

I tried to change my tag type from id3v1 to id3v2 and APEv2 by changing option>tags>mpeg>check all read & check write only id3v2 (v2.3 UTF-16) and APEv2 & check remove id3v1.

First i tried with a few mp3 files which is included cover by selecting the files and click save. It is working none of tag info is changing and the cover is still in the file. So I did it again to all of my mp3, however this time, most of the files lost their cover. Why this happen? Is it possible to recover the cover? I don't want to find these cover again.

Also, some mp3 id3v1 tag type wouldn't be removed by the above process. Why?

Thank you