[bobrap]

 Seems my system is a little wacky.  Did a complete fresh install of Win10 and have the same problem.  Don't believe it's MC.  If I have any other program running, like browser, it switches to that unless it's minimized.  If all other programs are minimized, normal behavior.  Don't know where this came from.. Strange indeed.

The sets thing is ok, I think.  Deleted the cache file and scraped ID and info again and seems to be fine.
Is there a setting somewhere for setting ignore articles?  Say I only want to ignore "The" and not "A" or "An".

Look at the Common Settings tab in Preferences, There you can select which prefix to ignore.

As for the Movie Set Cache losing set history, I am working on improving this with a separate Movie Set Database, away from Media Companion folder, as a look-up database for collection info.
More on that later. 

 I think I didn't explain myself very well.  I was referring to renaming a movie.  Selecting/unselecting the ignore article only determines how a movie is displayed in the list.  "A Bridge Too Far" is always named "Bridge too Far, A" because "A" is considered an ignore article and selected to move to the end of the title.  What I am looking for is to be able to select article to be applied to both sort and rename.  Hope I'm making sense (had a few beers )