There are lots of reasons why people create dailies in third party applications. Some of which are:
1. Becomes someone else’s responsibility
2. Editors are paid to edit, not transcode
3. Assistants are busy with organization, and if the DIT/Data Wrangler can do it, them one less thing to do.
4. AMA or import does not allow for specialized needs such as burn’ins, etc.
5. Some require color corrected dailies and syncing beforehand
6. etc.
The MXF wrapper only carries the basic metadata. All additional metadata is in the ALE file when available. This is added via a merge process.
Michael