Pinned Pages are lost on space move

Steps to reproduce:

• Create a new space
• Create a few children within this space
• Set Pinned pages from the space administration with an order different than alphabetical (for clarity)
• Move the space to a different location (with a user with admin rights)

Expected behavior:
The Pinned pages are also moved so the order in the tree will remain the same.

Actual behavior:
The 'pinnedChildPages' propety does not carry on the move action and the order in the tree will revert to alphabetical.