Dave, Thanks for mentioning about the differences between Scale and Move when working with items in drawing. I learned that lesson the hard way, early on. In this case, since these are metal slides, I was only interested in a pictorial representation that was true to overall size. Issues resulting from scaling like any increase in internal channel size were immaterial.
As for the explanation of my problem, your analysis was right on. In order for the correctly sized component to replace the existing ones, I first had to open an existing component for Edit and, then, apply the Reload. Voila, all instances changed to 22". Something so simple, but ...
Again, thanks for the help and insights.