I just finished the .beginGroup() / .endGroup() matching.
Thank you everyone who helped out. That was a chore.
In retrospect, I should have placed some of the .endGroup() markers closer to the finish of the settings.value() / settings.setValue() calls.
I also probably was over conscious about making certain .endGroup() always paired up--when functioned return(ed) in multiple places. But, they are all there. And they should match.
In all I altered about 55 files.
I have about 8 files to tackle that have QSettings passed as an argument. That is my next task is to handle those in order and update any files that call on the function.
I'm done for the day and quite tired of .endGroup().