Keep selections across header re-sorting

I often like to create playlists of every song in an artist’s catalog. I use filters to do this, where I start with sorting by track title and manually select individual tracks out of sometimes many duplicates. Occasionally there is a greatest hits album or platinum collection or some such that I want to select first to whittle down the number of tracks I have to do manually. I do this by sorting by album and selecting everything in that (or multiple) album(s). However, if I then re-sort by title, I lose my selections. I would like to be able to maintain those selections. This seems like it would be very simple to implement. Plex is great and I thank the team for taking this feature request into consideration.