There seems to be no facilitiy to choose in Flow triggers for planner - "when a task is updated"
This is really basic as there is no way to look for changes easly
It does seem rather silly to have create and complete but no update trigger. Or a change bucket trigger. Or change status trigger. This would be huge to allow planner to sync status info with other CRM packages that are inefficient at managing small projects (NetSuite comes to mind).
Agreed - Right now, it seems that I can better interoperate b/t Trello and Microsoft (MS) products than Planner and MS products. Until Flow or whatever provides better options for this, Planner can't be part of our planning. (Would also like to see Flow's interface be less mechanistic and more humanistic - especially when bringing in large groups of fields, like when connecting up planner tasks to SharePoint, Excel or wherever else.)
A work around would be to set a recurrence in Flow to update the Planner Tasks every certain period of time
Hope this help