I thnk it' a good feature if I can move a table from a diagaram to another one. Also in reverse engineer I would like to choose the project (new or actual), but also the diagram (new or actual)
We have this feature to "Copy-Paste table in different diagram" in our development pipeline.
For now, when you need to add same table again to different diagram again for same project, you can go to Diagram explorer and add tables which are not there in the diagram, as shown below:
Regarding your second part of question: "Also in reverse engineer I would like to choose the project (new or actual), but also the diagram (new or actual)"
We have another feature (https://support.sqldbm.com/communities/1/topics/39-reverse-engineer-on-top-of-existing-sqldbm-project) which is in pipeline, which will let users to Reverse Engineer on top of existing project, so users can keep their Database and SqlDBM project in sync. This feature will also allow user to use new diagram during reverse engineer.
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