it's not a relocation it's a new center.
airbus have lots of training centers for lots of roles also the fact you get to travel during training programs is a big draw for younger people. But typically trips abroad are only for the top few % as a reward not everyone.
The Bangalore Center is goign to be the hub for Airbus, as they plan to relocate to india and china. and the supporting parts are being exported to Morocco and Poland.