Hi,
On Outsystems, it depends on what is the changes. But the basic rule is if you didn't change the plugin that based on cordova, there should be no effect. So if the plugin that you use is cordova based, then you need to reupload .ipa file to the apple store.
Another way to check this, after you 1-click-publish the application, and Outsystems didn't generate new mobile apps, then you are golden.
Regards,