Grid: gridItem don't able to save expand level after updating only 1 that gridItem outside Grid.

[lusd]

I have tryied to solve this problem in that Pull Request # 306;

Saving expand level working fine, if we add new Item in the end of gridItems.
Also, if we have changed only one gridItem and manually add him to store (Not reseting the grid and call for bunch of new items with new memory links), all other items succesfully saved their expanded levels.

But main issue is what that one changed gridItem is loose his expanded status; That happens, because he has new memory link and new structure, and it's not the same item as previous.