Does upgrading IE keep settings and add-ons?

[JorgeA]

I'm finally getting around to upgrading from IE8 to IE9 on my Vista system, but before I pull the trigger, I have a question:

 

I know that the upgrade process is supposed to keep the Favorites, but I have a lot of customized settings under the various tabs in Internet Options (Security, Privacy, etc.). If I install IE9 over IE8 (or, for that matter, IE11 over IE9 in Windows 7), will these settings carry over to the new browser version, or will I have to re-do them all over again?

 

How about the IE toolbars and extensions (TPL, Adobe PDF Creator, etc.) -- will they need to be reinstalled, or does the upgrade process preserve them?

 

Thanks for any info on this!

 

--JorgeA