I've asked for this before but can't find it!
We really need to be able to use SIM to select new products for importing but then export the data to your Item Import Template so we can check and tidy it up properly before importing.
We are getting far too many errors using SIM to import directly and it takes hours of extra work to tidy up SIM imports.
This would save so much time and help keep descriptions, matrices and prices much more accurate.