Enable the ability to add multiple personas to an Idea

I have added a Persona Custom field into my idea. The persona's are inherited from a workspace line. As this is inlcudes a number of workspaces and line when typing the results I get many results when selecting the custom field. When I add a single persona, the results go straight back to the begining which means I need to scroll down the list over and over and over again to add the persona's. I tried to use the bulk feature, but I don't see editing persona as an option. This makes this tasks unessecarily painful. It would be great if this field could ne inlcuded in Bulk, or when editing the field it does not jump back up to the first result again.