Read database changes into an existing model

I'm trying to put the data modeler to good use to track my database changes between versions now. But of course the modeler does not have the database features like IbExpert or Sql Manager for Firebird. So my "normal" way to work with my database would be to make the changes in my database (i.e. new fields and adjusting a trigger and stored procs) and test them and when it's done they go into the data modeler.

But I don't find any option to read the changes into an existing project, so everything has to be manual. Would it be useful to create a temp project the same way you read the initial database and then make the compare between the current model and the temp project... or something like that. I, of course, don't know your internal structures, but I guess many developers would find that useful.