For all versions of QWin prior to QW2017, I have recommended not using the internal Corporate Spinoff action which generated back-dated transactions. Instead, i have recommended using a Remove Shares / Add Shares sequence which keeps the data timely and accurate. QW2017 adopted that same procedure. I would suggest at this stage you only corrective action would be to delete all the associated transactions generated by the Corporate Spinoff action you entered and re-enter the events using Remove shares and Add Shares. For an investment with many lots, that might not be worth the effort. Depends on your objectives and needs. I believe I have laid out some steps that can ease the process, but do not have those off-the-top. Post back if you want more info.