Load rule with multiple expressions

Hi,

Wanted to know how RPAS executes expressions when there are multiple expressions in a single rule in the 'Load' rule group. We have always used multiple expressions in a single rule in 'Calc'. During execution, we know that based on the measure edited, RPAS finds out which expression to execute in the rule and executes 'only one' of the multiple expressions. But, what is the behavior when there are rules like this in the 'Load' rule group?

Thanks!

Naren