importing another renoise module


appologies if this was asked or discussed before, but my searching skills did not produce anything of use.

I have three big (cca 30min each) compositions, each written and saved in its own respective Renoise module with their own instruments/samples. what are the possible approaches/strategies to end up with all three compositions in one module with all the instruments/samples correctly placed etc…?

Any thoughts on the challenge most warmly welcome!