@Samir Khan,

Thank you for you quick response!

I agree that testing the abilities of a new product, particularly when replacing one that needs to be retired, should not depend on a migration path and indeed that will not be the final criteron. For what its worth, I have never considered Prime as a replacement for MathCad 14/15. Since transfering a licence from one Windows machine to another is probably no longer possible, I was hoping to be able to migrate as many files as possible since I've been using Mathcad since 1992 and have files that old (,mcd format). I'm guessing that Maple Flow may not even be able to process those :-).

Thanks again,

-Joe