I assume that you enter, date, shares, price, and commission if necessary.. then at the lower right hand corner ofthe page is save, you must click save for the transaction to become effective..You can also refresh page from popup with right click and choose it from the menu. Then you can go back to the fund or stock on the snapshot page to see if it took. You can also go to the edit popup when you hover your mouse over that stock or fund, click edit, and click buy/sell at top of the area to check all entries. If this is not working try the help or FAGs. If still no answers email Morningstar with problem. they usually answer in a day or so.
I have not had any issues with these ,except while I was teaching myself the workings of Morningstar portfolio. I made plenty of mistakes but have finally figured most out.