The tag Album-Interpret is not replaced by a new one, if the existing tag ends with a semicolon.
The new tag-contents are simply appended to the original.
I found this error using Foobar2000 to check and correct the tag.
The tag Album-Interpret is not replaced by a new one, if the existing tag ends with a semicolon.
The new tag-contents are simply appended to the original.
I found this error using Foobar2000 to check and correct the tag.
How do you do this replacing?
The solution to replace the album-interpret-tag ist simple:
2nd solution:
Let the developer correct the MP3Tag-Program 
Please tell us how you do it and what the tags look like in the dialogue Extended tags (Alt-T)
I just added a semicolon to the field ALBUMARTIST (there is no standard field "Album Interpret") and then entered a string without semicolon and nothing got appended - the field content got replaced with the new data.
And as this did not reproduce the alleged bug, it would be interesting to see how you did it.
Ok with the ALBUMARTIST!
You are right.
If you add a semicolon at the end of the tag, save it , and the remove the semicolon, it really works fine.
The problem lies in the origin of the tagged album e.g. when the album is downloaded from e.g. a torrent.
There must be some code in the tag, which are not recognised by MP3tag.
I try to reconstruct the last occurrence and will send more details in the next days
Please note that some applications use the semicolon to show multi-value fields
That is why I asked for a look at the extended tags dialogue where you would then see several fields of the same type.