It would be helpful to be able to move the Z39.50 modal around the screen when performing a Z39.50 search while editing a record in the Advanced Cataloging Editor (editor.p) Sometimes after doing the Z39.50 search you need to see something in the original bib record and it ends up being obscured behind the modal causing you to have to close the modal in order to view the specific part of the bib record you needed to consult. Then you have to re-execute the Z39.50 search. It would be a great timesaver if you could move the modal around the screen to view all parts of the bib record behind it.
Bootstrap modals weren't designed to be movable, so it might be a fairly significant change to make it so. I wonder if it would be useful to be able to show and hide the modal without clearing the results.
We use some jQuery to be able to move the modal around on the screen. Since the Bootstrap modals aren't supposed to be moveable I think your suggestion to show/hide the modal without loosing the results is great.
It would be helpful if the modal was moveable, perhaps changing to a regular pop-up like it is for the basic editor. That way the search results can be compared side-by-side with the original record. I often find that I need to close the search results to check the record and then repeat the search to finally select the correct record.