Sorry, Mathieu,
you have to build it up new – incompatible worlds for keyboard-settings…
…but with the new keyboard-layout in 11.0 it should be done quite comfortable…
did you try to ingest your xdcam-files from the original card-structure through media browser – instead of using xdcam-transfer in between?
In days of FCP 7 it was a necessary step changing from mxf to mov, but Premiere works fine with clips out of the original card structure (copied complete to hd).
got similar issues. And found no on-board solution, that really works as it should work.
My solution: the PlugIn of Eyehight; quite expensive, but works as it should work, no or only little colour shift.