What are the key points that should be kept in mind while performing the Non-automatic update in SAP HANATr.Cont.? There are 2 correct answers to this question.

What are the key points that should be kept in mind while performing the Non-automatic update in SAP HANATr.Cont.? There are 2 correct answers to this question.
A . Automatic release of units
B . Changes to Delta Container
C . You need to refresh the content of the container manually
D . Take snapshot manually before releasing of the container

Answer: C,D