When adding or updating a record I often find myself in a situation where I would like the selection (combo lookup) of field C to be filtered based on values I have set in fields A and B. Currently the Software Factory only allows you to create such a behavior when you include fields A and B to the lookup reference column list. This poses a bit of an issue when for example you would like to filtered based upon a date field.
There is a better way to create such behavior. If the Software Factory would allow you to determine the lookup combo values based upon a tabled value function. You could then include the values of fields A and B into the parameter set of the function.