http://www.amazon.com/Converting-to-...sin=B000FI73MA
It says here that Mobipocket Creator Publisher Edition will convert to and from AZW1/TPZ formats. Not sure if it's true, but I'm gonna try it and see. All I need now is to find an AZW1 file and try it. That, or at least try to convert a PDF to AZW1 and then back again.
-----UPDATE
I imported a pdf, and was able to convert it to Mobi, but to no other file. No option as to what format to export to. So this is out. Depending on how the Pocket Pro reads both the PDF version vs the Mobi version of this book, I might convert all my pdfs to mobi.
If this program CAN convert AZW1 files, I'd like to know how.