How make macros for replace one object (image) for another?

I need some macro or something for one task: replace object.

For example: i have one object with width, heigh, opacity, coordinats (x,y) - it's place perfect and have right size and position, but i need replace it for another (like one image for another, or one powerclip for another).

I past new object (or image) and after that replace every props (height, width, x, y) by hands - and cry... i want make this process easer, but linked image can't help me, it's not good for some export =( 

And there are many object (50+) and in everyone new file i need replace they all

Maybe i can do it with macro? But i don't know how =(