Hi.
I did a quick test and there might be a workaround using the groove template function.
For secutity make copies of the two regions involved (the region you want to copy the velocity data from and the region you want to paste velocity data to).
1) First of all make a "Groove template" of the region you want to copy the velocity data from (select the region and go to menu Options/Groove templates/Make groove template).
Be sure to view "Extended Region Parameters" (press X or select Options/Extended Region Parameters).
2) Now select the region you want to paste velocity data to. (At the top in the Extended Region Parameter-box you will find a pop-up-menu named "Quantize". At the bottom of that list you select your newly ceated groove-template).
3) The trick is to set the "Q-strength"-value at 0% and the "Q-velocity"-value at 100%. The notes in the destination-region that closely matches the source-regions in timing will now adopt the velocity-value.
If this solution might or might not work depends on the sourcematerial.
When you are satisfied with the result you should probably Normalize region parameters (pressing N) and apply quantize settings destructivly (pressing Q), or else, any changes in the region thjat is your "Groove template" will also mess up your destination region.
Orjan
Imac 17", 1,9 Ghz Mac OS X (10.4.3) 1,5 GB, Logic Pro 7.1.1