Hi rasonline

I believe I've encountered this issue in the past. Try creating the new sheet BEFORE the code to copy Filtered Data. Then do your copy paste.

Something like this (NOT tested)
 Sheets.Add
    ActiveSheet.Name = "Norefs"
'Do your filtering here then the Copy/Paste
Sheets("Import").SpecialCells(xlCellTypeVisible).Copy Destination=Sheets("Norefs").Range("A5")