How do I convert old technic worlds to work in newest versions

[elofer]

Hi all, 

I have some old worlds from technic. I had a world with quite a few builds in it. A whole heap of spaceships. This world had many blocks from the micro blocks mudpack I believe its called which includes covers, panels, cover strips etc. We tried to convert the old world into Tekkit classic only to find they ave changed the block IDs. So does anyone know how I could get the world into a playable version. The blocks still exist as we put the world into mcedit and saw the blocks where still there. 

Thanks