I have had some "oops" experiences while importing POI files. I mostly download zip files from web, then let Locus handle them.
Locus gives me a list of categories that I can import the new points. If I accidentally "click" (=touch) a wrong place on the screen, I will loose the contents of that category :(
Even if "are you sure" is sometimes a pain, I would like to have it in this instance.
An OK/cancel box with the text "Importing to category X". Cancel would bring you back to the category selection list.
done ...