In case anyone doesnt want to go to Jumbo 103 (as it is ongoing and not yet GA) it is possible to get a ported fix for the earlier jumbos.
we have just had one made for jumbo 70, and will will look to go to the next GA jumbo that has this fix.
we have also been advised to run a migrate export.
presumably, from what i have read and been told, take a backup before installing the hotfix.... : ) not convinced that is time well spent.
migrate export & show config are the steps i have taken, just in case.