Fluid Shopping Cart

We are receiving reports that students cannot add classes to their shopping cart in 9.2 prior to the First Date to Enroll on the Term/Session Table.  Is this working as designed?  Evidently students were able to add classes to their shopping cart in 9.0 prior to the enrollment period.  They would preload classes into their shopping cart and then enroll as soon as the enrollment period began.

What date (or other) criteria must be met in order for classes to be added to the shopping cart?

Thanks,

Janelle