For whatever reason, I've had a bigger-than-a-handful group of folks recently register MR/2 claiming to be converting from PM Mail. One asked me about the age-old conversion scripts on my site; they didn't work. So, I looked into it for him. It was a pretty easy fix.
Just for the record, there is now a utility that will convert the PM Mail 2.x format address book and messages into MR/2 ICE form. The PM Mail folder structure is handled recursively, but flattened to fit in MR/2's structure.
If interested, go here:
http://www.mr2ice.com/#utilities
You can start at the very top of that page for general MR/2 info and download access.
Nick
Source: OS2VOICE