Flagged Emails and Planner Tasks get Duplicated

Hi, 
i have a similar problem.

when moving a flagged mail conversation to a group (like a customers - or waiting for feedback) i have 2 entries in Outlook. One of them is an empty task and one of them is the flagged mail. In my point of view there should be only the flagged mail in the task list of Outlook, as later on you want to respond to that item.

Also the categories from Outlook are not visible in To-Do. This would be a nice feature. Mostly a flagged mail has one categorie which states which customer or which area it belongs to and the other category is if i am waiting for a feedback or if I actually have to do something. So it would be good when tasks can belong to more than one group (as it is allowed by Outlook already). 

Are these problems already known / the features are planned to implement?