I can synchronize my model in DM with the actual Data Dictionary of a database by selecting Synchronize Model with Data Dictionary.
This is working fine for (existing) objects like Tables, Views, Sequences.
(For new Tables, Views, Sequences and Synonyms there is a workaround existing, see:https://forums.oracle.com/message/11107346)
It is not working with Materialized Views (they are all marked as "To Drop")
and it is not working with Packages (they are ignored).
I am using DM V 126.96.36.1997
How can I synchronize packages and what has to be done that M-Views are found and not dropped?