OK, seeing your second reply above I think maybe we are not on the same page. Re reading my own first message in this thread I'm not sure I was clear about what I was asking. In fact, I think I wound up asking two different questions in the single thread.
I believe I understand about moving repositories between databases from the earlier reply. Now I'm talking about updating imports and packages which I've developed using one MS SQL Server database so that they will all now point to a different MS SQL Server database. If I have to export the repository, edit the exported repository, and then import it to have the changes made, then I think I see how to do that, but are the exported repositories readily editable? I've looked at one and there seem to be some non-ASCII (or at least some non-alpha-numeric characters that I don't recognize) in the files.
I hope this clarifies my question. Sorry for the confusion.