My animated text don't stick to I + Loc ?


I try to make a handwritten text, but I have some problem when I press Alt+A. I cut upp the text Lurifax 2014 in
many small pieces and press Ctrl+P to separate pieces from each other and drag them forward in front of the wall. I start at frame 1 - I+Loc and frame 5 and move pieces forward and I+Loc 10+I+Loc 20+I+Loc

When I animated all pieces in letter L I Save over and press Alt+A but nothing happen. Text suppose to go back to frame 1 and move back behind the wall, but text still in place infront of the wall.
I been doing this many times before without any problem so I don’t understand why I have problem this time.
Do you have any ideas.
Thanks in advance