If a stackable item is not in the same spot as the body you're retrieving, it does not restack into 1 stack.
Example: If your body has 121 GHPs at 3,4 (x,y in backpack) at death and your grab a new stack of 225 GHPs at 1,1, you will have 2 stacks of GHP's at 1,1 (225) and 3,4 (121) rather than just 1,1 (346, total of both). If both stacks are in the same spots, they will restack.
If a stackable item is not in the same spot as the body you're retrieving, it does not restack into 1 stack.
Example: If your body has 121 GHPs at 3,4 (x,y in backpack) at death and your grab a new stack of 225 GHPs at 1,1, you will have 2 stacks of GHP's at 1,1 (225) and 3,4 (121) rather than just 1,1 (346, total of both). If both stacks are in the same spots, they will restack.