Ok, i have mpr tag 2.42, tagscanner 5.0 build 5.25
And lots of aac music files, aacPlus, 56kbit parametric stereo AS DESCRIBED by the encoder that i created them with, AND MPEG-2 HE-AAC (Implicitly signalled), sample rate 22050 (output: 44100), SBR present, Channels: 1 (output: 2), mode: parametric stereo, bitrate 56072, AS SEEN by Winamp
Now when i open them with tag scanner, i have information in the ALBUM ARTIST field, cover art, a number in track number field, a number in total tracks field, and also a number in the 2 disc fields (disc 1/1 for example.)
Now when i open the same track in mp3tag, there is nothing in "album artist" field, there is no cover, the track number is a simple number rather than 9/22 for instance (it only shows 9), there is nothing in the discnumber field, and tag type is id3v1.
When i ALT+3 the same track in winamp, i have 4 tabs, basic info, artwork, id3v1 and id3v2.
The settings in mp3tag regarding reading and saving tags ar as follows:


As u may have noticed, i enabled reading all kinds of tags, but i disabled saving tags in ape format as my nokia e90 music player doesn't see album art if aac has ape tag.
Now my obvious question is why can tagscanner see album artist tags, covers, save them, tracks number and disc number and mp3tag can't ?
Why mp3tag shows me the tag is id3v1 and that it has no cover art, when winamp clearly knows it has album art and id3v2 tag ?
I am always forced to use tagscanner to proprely tag my aacs.
Moreover, when i check extended tags in mp3tag for the aac files only the following 6 fields are shown: ALBUM, ARTIST, GENRE, TITLE, TRACK, YEAR. And no cover art. When there should be a cover art, and 2 more fields, ALBUM ARTIST, and DISCNUMBER.
Is there something mp3tag can't proprely detect ? Am i doing something wrong ?What's the problem ?