Load the version you know fits the damos into mapanalyzer along with the one you want to compare and then use the slide to match them up taking the new map locations or working out the offset. Take you 5 mins to work it out.
Thanks, your advice helped me a lot, I'd discovered "Connect windows" feature in WinOLS. I connected SW 0001 and SW 0002 in hex dump, found matching maps which I was interested and then simply copied definitions via one button click.