ProFile will not print the extra pages of the GST370 form. Instead, provide a print out of the T777 and T2125 with the summary page for the GST370, as this contains the details the CRA is looking for.
ProFile's GST370 is not like the fillable CRA form, since it pulls the information for what the CRA considers page 2 from T777 form, etc., and just presents it as the summary.
Historically, the CRA has accepted the T777 and T2125 as the breakdown along with the GST370. However, if the CRA requests that information, the data will have to be entered manually on the fillable form off the CRA's website.