Hasta La Motion!

I’m removing some unwanted stuffs on floor.. shot is like camera dolly in shot..

frame 1 i ve made clean plate & projected. and frame 50 i ve made cp and projected… i got black edge.. so i extend my cp. it’s bigger than my plate size..
my extended cp. not matching with original plates. of-course it wont match… i i ve to reposition my ext. plates.. but How to do that… if i use Transform or crop disable in Project3D and not working out.. as i want… how do u guys handle this situation …
extended clean plates Projection on original plate ?

Thanks