[quote user="Boortsneggor"]Did I understand it correct, that this datamodel changed in CONNECT Edition and that instead of TagElements you should use ItemTypes?[/quote]
For MicroStation CONNECT, Bentley Systems have deprecated tags in favour of Item Types. Deprecated means: "Prefer to use the new technology, because it's new" and "We've hidden the tags tool palette so you won't be tempted to use tags". However, as others have found (search the MicroStation Forum), Item Types are not yet a complete replacement for tags. Tags continue to be supported in MicroStation CONNECT.
Don't get me wrong — I'm very much in favour of Item Types. The technology promises a lot of potential benefits.
This article summarises some CONNECT technology, including Tags and Item Types.