Hi. It's not the WordPress that's causing the problem. It's when I update WAMP, all apps installed lose their settings and have to be reinstalled. That's why I asked if there's something similar to a 'child theme' that would encompass all of them, not just the WP.
I will install the plug-in you suggested; thank you. However, what do I do for the rest? The WP has been updated since I first posed this question; I'd like to take care of them both today.
Thanks in advance for your assistance.