Hi @hassen.sbai 

if you choose for example Navigator IFS will restore the whole navigator etc.

If you haven’t important settings (saved searches, short cuts etc.) then I recommend you to  choose all options.

think you @Link 

I wanted an explanation of each of these options

Hi @hassen.sbai,

Just click on the question mark at the top and then click on the item you need to know to see a description.

The only item for which the help text is not available is ‘Options’. Options will reset any setting you have configured under Tools → Options in the main IEE menu. 

Hope this helps!