Steps to reproduce:

1. Create a Space
2. Create Tasks on any page in Confluence
3. Create a page with the Task Report Macro and filter the report based on Space and Page to populate the Task.
4. Export the Space to XML.
5. Import the Space to the New Confluence instance.

Expected

Task report macro recognizes tasks in the imported Space in the New Confluence instance.

Actual

Task report displays a message "Looking good, no incomplete tasks." in the imported Space in the New Confluence instance

Workaround

Option-1
The workaround discussed in Certain tasks do not show up in the Task Report Macro works for when the macro uses the Space Key as the identifier, but not when the macro uses Page ID.

Option-2
To populate the task reference the Page ID, manually edit the Task Report Macro from the imported Space, and find the page where the task exists.