I think most safety agencies would be more than glad to cooperate in making such transitions as smooth as possible.
Peter Tarver brings up a good point. In the case of major changes, notices do go out to the FUS staff. But a big problem is in the logistics caused by multiple changes by multiple companies; eventually, the cross reference becomes very unweildy. Charlie Bayhi has some excellent suggestions on how to handle this problem. Another thing you can do is to have a copy of the announcement by the company changing names (on their letterhead), and make sure that this is available at the time and place of the next FUS audit. Ideally, this letter should explain the change in names and, perhaps, even model designations. It should also include an assurance that the product is unchanged. And it should include an indication that they are have taken care of updating their listings with the applicable safety agencies. The advantage of this is that CSA inspectors, and others, are often authorized to "red-line" (correct) the report themselves in such simple cases, and they can do it right there and then! Later on, when you have something more important to correct/add in the report, then you can also request this simple change be added (at no extra cost). Regards, Egon Varju