Someone said:
"....then they will be operated under EASA."
Operated? maybe, Maintained... Definately!
Once these aircraft are maintained under Military rules they will need all the work conducted re-done to bring the aircraft back into the "Controlled Environment" of EASA rules. Also under EASA rules each aircraft will be maintained under its own unique Approved Maintenance Programme - not some cobbled together set of jobs good for all aircraft in whatever conditions, like the RAF does.
To transfer between AMPs means conducting a maintenance check to bridge between the two programmes.
To belay another Myth appearing on this thread - there is no such thing as DUAL regstration!
Any aircraft can only appear on one register at any time and to change registers is not done at the flick of a switch but takes at least three weeks of admin and transfer work between Reguators and maintenance staff. It is for this reason that some (if any) aircraft may be permanently military registered to keep a minimum mil fleet available..
Amused at the ramblings on here...