Data print sequence

Can someone help me with this issue of the data being printed not being in sequence?  The link shows the report and if you look under the heading "Run No." you can see its not in sequential order. Now this doesn't happen for every report that gets printed. Its seems it happens at random. I am using CR 8.5 and Microsoft access for the database.http://www.precisionproving.com/wp-content/uploads/2016/06/report.pdf

Can't really tell much from the PDF image. Is that a sub report? Is the sub report set to sort on the circled field value? Is that value an int or a string? if it is a string is it possible some of the data has lead spaces or other characters? Can you convert it to an int and sort on the converted formula value?