Union Query in Crystal sub-reports

[XHP95]

I am trying to create a crystal subreport that will be populated by means of a union query. This
union query has 4 WHERE clauses. I am aware that Crystal Report adds a string to this WHERE
clause by means of which it links the main report with the sub-report.

My question is - Will Crystal Report add such string to all the 4 where clauses ? If not, what should I
do to ensure this happens?

Thanks and Regards