When adding Columns in Power Query there is no option to choose the data type, so columns are added as untyped. Users are left to add another step, or manually edit the function to set the optional ...
Also: When changing the type on a column immediately after the step that created it, offer a similar message to the one that already exists on successive type conversions:
"The selected column allows type to be specified when created. Would you like to replace the existing conversion, or preserve the existing conversion and add the new conversion as a separate step?"
