I am running into this same issue. Can someone from Intuit tell us how to get around this issue?
I need to have more than one ESPP sale and they have different 3922 data. As the OP stated, it won't let you enter two sets of data. When it gets to the place where it asks you to enter the 3922 data for the second stock sale, it changes back to the first sale and changes that data.
