Date of First Change is determined by EZLease, not entered by the user. When a lease is revised, it's the date from which we need to start recalculating the lease, because something about the lease changed. While the change will be booked on the Revision Booking Date, if, for instance, the rent was changed effective at the beginning of the year (2022), the Date of First Change will show 1/1/2022. If that's earlier than the Revision Booking Date, we reverse all the activity on the old revision between those two dates, update the lease, then apply the new revision from the Date of First Change Forward. The reversal and restatement are all recognized on the Revision Booking Date.