Issue Summary

If a parent page has the Page Tree macro and references a space on the "Restrict to this space key" property, if you copy/move the page including its children, the macro will fail to load

Steps to Reproduce

1. Create a parent page and at least one child page
2. Include the Page Tree macro on the parent page, and populate the "Restrict to this space key" property with the current space
3. Copy/Move the parent page to a new space (including its child page)

Expected Results

The pages are copied/moved and the Page Tree macro will reference the new space, and display the child pages

Actual Results

The pages are copied/moved and the Page Tree macro will try to list pages from the source space. The following error message is shown:
"The selected root page could not be found."

Workaround

After copying/moving the page to the new space, edit every affected parent page and change the "Restrict to this space key" property to the current space.