Right now, if we have a list with a filter in it that has multiple selections (such as multiple grade levels or course titles), changing the filter to include one or two more options requires re-selecting everything that was in the filter before. This can be a problem when there are a significant number of options selected and another needs to be added.

We'd like to be able to edit an existing list filter and add additional selections to the filter without needing to re-select all of the selections that were already added.