As I understand databricks supports conversion from Iceberg format to Delta using the command below
CONVERT TO DELTA iceberg.`abfss://container-name@storage-account-name.dfs.core.windows.net/path/to/table`; -- uses Iceberg manifest for metadata
However, there is no reference to writing to Iceberg format from an existing Parquet / Delta format. Can you please confirm if this functionality is supported ?