I'm pretty sure that as long as both authorities agree on it then it's not a problem. However you need to do all the work yourself, which is to contact each authority and get them to contact eachother ( sending e-mails should be enough ).
It might also be a good idea to have the approval in writing...at least I would like that.
There's already a thread about this, please have a look at it for better info:
http://www.pprune.org/professional-p...pl-theory.html