Well, I recently got a Treo 650 as a replacement for my Kyocera 7135. Verizon sent me instructions on how to get the data to the 650. I printed out the instructions from this forum.

However, I stupidly forgot to sync my 7135 but did remember to rename the old data directory. I thought I was in real trouble. I decided just to try copy the old address.dat, memo.dat, datebook.dat from my 7135 to the 650 subdirectory.

It all worked well!! It turned out to be much easier than any of the directions that I received.