See my response in this related post. Since you have AF on filter change set, Planner generates an expanded format plan when it is created. Then when it is imported, no effort is made to convert from the expanded form back to the compact form, thus you end up with three targets, one for each filter.

This stuff is historical, most people now use filter focus offsets and avoid focusing on filter changes. Once you get that set up, your plans will be in the compact format and will import as you expect.