As an update, here is the current top of the MPX file.
MPX,Microsoft Project for Windows,4.0,ANSI
10,$,1,2,",",.
11,2,0,1,8.0,40.0,$10.00/h,$15.00/h,1,0
12,1,0,480,/,:,AM,PM,20,0
20,Standard,0,1,1,1,1,1,0
25,1
25,2,08:00 AM,12:00 PM,01:00 PM,05:00 PM
25,3,08:00 AM,12:00 PM,01:00 PM,05:00 PM
25,4,08:00 AM,12:00 PM,01:00 PM,05:00 PM
25,5,08:00 AM,12:00 PM,01:00 PM,05:00 PM
25,6,08:00 AM,12:00 PM,01:00 PM,05:00 PM
25,7
30,Project1,,,Standard,,,0,17/10/2007,,$0.00,$0.00,$0.00,0.00h,0.00h,0.00h,0%,0.00d,0.00d,0.00d,0%,,,,,0.00d,0.00d
60,Name,Outline Level,Milestone,Start,Baseline Start,Finish,Baseline Finish,% Complete,Cost
61,1,3,81,50,56,51,57,44,30
70,CLASSIFIED NAME HERE,1,No
70,CLASSIFIED NAME HERE,2,No,01/10/1997,01/10/1997,30/09/2020,30/09/2020