Pie not tradable stock

Why when I try and save a new update from a pie creator, does it include stock that are no longer tradable? Why are these stocks not removed in the update if they are no longer available for purchase?

How do I balance the pie when the two stocks are not tradable and are 4% of the pie each?

If your pie is linked to another one and the update includes slices with delisted companies, the owner hasn’t yet exported them.

When you select ‘View Update’, you’ll see a screen that provides information about the current situation of the original pie. There, you can preview the changes made by the owner, apply these changes to your pie, or make additional modifications you may desire.

You can manually export the delisted shares from the Pie by following the steps here.