Capturing Tasks from other notes into Markwhen file

What I’m trying to do

I am trying to query tasks from different folders, we’ll constrain this to each folder represents a small project, into one file for Markwhen plugin to read.

Things I have tried

I have tried the task plugin query and dataview codes to find the tasks and list them out. This part is successful. The problem is that Markwhen is not recognizing these in order to put them into its gantt/calendar views. I have tried to put the due dates before the task like Markwhen has it but still no go. Do I need to create a template and just recreate the Markwhen file everytime in order to view an updated calendar view?

Are you able to query the markwhen to produce a list of all tasks in the markwhen file?