Thanks for the suggestion. It is on our integrations roadmap, will be coming.
No promises on exact timeline though.
We will add the possibility to delet an item but not from old plans in the future, that's on the roadmap.
Until now the workflow is that each plan like that is either kep as and on hold/overdue plan or moved to Problems and gets a description/comment there why it is not relevant anymore.
Customer support service by UserEcho