save the document, then on the document do a document1.copyToDatabase(Your Other DB). To make the document work in the otehr DB you might need to change the Form and perhaps some other fields to make it work in the Other DB but that is pretty simple.

One view is in a dialog that opens by clicking a button and second view is in the same xpage that button is. There are hundreds of documents in first view, user should select one document from the first view then save in the second view 

If I enable first column of view to display as link "editable" it opens in a form but it doesn't  save to the second view  these two views have different structure, the selection formula of both views is SELECT Form = "Customer"  how can I save document to the second view.

Thanks for any ideas! 

There is a button that user can add new project (for the selected customer,I used $Ref to display only projects of selected customer) to the second view when I create new project from this button it saves in the view. But when add project that already exist from a view that opens in a dialog it doesn't save to the second view. Also there is a view that display all project for testing I opened a project editable and changed it saves only in the view that display all project not to the second view. 

all project appear in second view that is I don't want.  It should appear only projects of selected customer and I can add existing project in this view