Banshee loses additional sorting tags

[Maxim Kuznetsov]

I added additional tags in Banshee to sort files as I want, and when I'm adding a new album of the same band without theese tags, some of them are dissappearing from other files.
Sometimes I see that tags desappeared without any reason.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: banshee 2.0.0-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Mon Oct 10 11:34:15 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate i386 (20100928)
ProcEnviron:
 LANGUAGE=ru_RU:en
 PATH=(custom, user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: banshee
UpgradeStatus: Upgraded to natty on 2011-04-29 (163 days ago)